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Curriculum Vitae

Klaus R Koch Platinum Metals Chemistry Research Group

Department of Chemistry and Polymer Science,

University of Stellenbosch

EDUCATION AND APPOINTMENTS

1972: Matriculated from St Paul’s College in Windhoek. Joint Matriculation Board

examination in the 1st

class.

1973: Military service, 1st

SAI Battalion 1976: BSc in chemistry and physics with distinction in chemistry, University of Cape

Town

1977: BSc(Honours) Chemistry (1st

Class), University of Cape Town 1979: PhD Inorganic Chemistry at the University of Cape Town. 1980: Lecturer in the Department of Analytical Science (Chemistry), University of

Cape Town 1983: Visiting Scientist, Merton College, Oxford University 1983: Studied Gas

Chromatography with Dr Courtenay Phillips 1984: Promoted to Senior Lecturer at the University of Cape Town 1986: Visiting Scientist, Heinrich Hertz Fellowship, University of Paderborn, Germany

with Professor A Kettrup 1987: Appointed Acting Head of the Department of Analytical Science (Chemistry),

University of Cape Town. 1989: Associate Professor and Director of the NMR laboratory at the University of

Cape Town. 1993: Visiting Fellow, Robinson College, Cambridge University, UK 1993, with Dr Edwin

Constable. Recipient of the prestigious ‘Ernest Oppenheimer Travel Fellowship’

for research in Cambridge. 1997: Visiting Professor at the Department of Chemistry of the Technical University

of Munich (3 months) and the University of Leipzig (3 months), Germany. 1999: Visiting Professor Department of Chemistry (Host Prof A. Golloch) at

University of Duisburg, NRW, Germany 2000: Appointed professor of Analytical Chemistry, University of Stellenbosch.

2002: Fellow of the Royal Society of South Africa.

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2006/7: Visiting Professor at ‘ Fakultät für Chemie und Mineralogie’ (prof Eva Hey-Hawkins), University of Leipzig, Germany.

2008: Head of Department of Chemistry and Polymer Science (2008-2013)

AWARDS AND HONOURS

1971 Foundation for Education Science and Technology Award to participate in

1976 the 7th National Youth Science week, Pretoria 5-9 July 1971. CSIR BSc(Hons) Study Award

1977/9 CSIR Doctoral Study Bursary 1983 CSIR and University of Cape Town Sabbatical Grant 1986 Heinrich Hertz Fellowship (Northrhein-Westfalen, FRG)

1989 and FRD Sabbatical Study Bursary Best Poster at XXVII ICCC, Gold Coast Australia

1993 Ernest Oppenheimer Memorial Trust Travel Fellowship and

1997 FRD Sabbatical Grant. “Deutscher Akademischer Austausch” (DAAD) Fellowship at technical

University of Munich and Leipzig, Germany

1999 Foundation for Research Development Sabbatical Grant Visiting Professor, Analytical Chemistry Department, University of

2002 Duisburg, Germany (March-April) Elected Fellow of the Royal Society of South Africa.

2006 DAAD visiting Professorship, University of Leipzig Germany 2010 Stellenbosch University Rector’s Award for Excellence in Research 2011 Stellenbosch University Rector’s Award for Performance 2012 Stellenbosch University Dean’s Performance Award 2012 Elected member of South African Academy of Sciences

PROFESSIONAL ACTIVITIES AND EXPERIENCE

Professor of Analytical Chemistry, Stellenbosch University, 1 May 2000 to date. Restructured the Nuclear Magnetic Resonance Spectroscopy laboratory at SU

from 2001-2004 when this was incorporated into the Central Analytical Facility (Academic advisor: CAF at the University).

Executive Head of the Department of Chemistry and Polymer Science 2009-2013.

National Research Foundation (NRF) C rated researcher since 1984: Current NRF rating B, with a re-evaluation by invitation pending in 2014.

Associate Professor in Analytical Chemistry and acting head of Analytical Science Section of School of Chemistry at the University of Cape Town (1989-

1999)

Director of the “Nuclear Magnetic Resonance (NMR) Laboratory” at UCT (1989-1999).

Established the “Platinum Metals Chemistry Research Group” in 1998, under the NRF/THRIP research initiative, and relocated this to Stellenbosch University in 2000.

NRF reviewer from time to time; from 2008-2010; Committee member on

NRF Assessment Panel for Chemistry Ratings

Member of the Royal Society of Chemistry (MRSC). Member of the American Chemical Society (ACS) since 1990.

Member of the South African Chemical Institute (SACI) since 1983. Elected Fellow of the Royal Society of South Africa, 2002. (FRSSAF)

Member of the South African Academy of Science.

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Council Member and Foreign Secretary of the Royal Society of South Africa 2005 to 2007.

Member of several national and international scientific conference organising committees (see below).

Committee member of local professional bodies at various times: Royal Society of Chemistry (Honorary Treasurer (1988-1999), S. A. Chemical Institute

Western Province Section, (1990-2002).

Referee for several international scientific journals inter alia, Angew. Chem (Int. Engl. Ed), Inorganic Chemistry, Dalton Transactions, RSC Chem. Communications., Analytical Chemistry, Analyst, Inorganica Chimica Acta, Talanta, South African J. Chem., South African J Science, Anal. Chimica Acta, Hydrometallurgy, Separation and Purification and several others

Consultant to Anchor Yeast Limited 1989-1991 Consultant to Medichem Pty. Ltd, Cape Town 1992 to date.

Consultant to Impala Platinum Limited, June 1993 – 1996

Consultant to Two Oceans Aquarium, Cape Town 1992-1993 Consultant to Namakwa Sands Limited, 1995-6

Research contract with Angloplatinum, Ltd, 1997-to 2012

Committee member of National Research Foundation Evaluation for Chemistry

panel 2008 onwards

CONFERENCE ORGANISATION

South African representative on the Executive Committee of the International

Coordination Chemistry Conferences (ICCC), 1988 - to date.

Finance Committee Convener and Treasurer: 33rd

National South African Chemical Institute Convention, held in Cape Town 29 Jan - 2 Feb 1996. Committee member with scientific programme responsibility: 4th International

Symposium on Applied Bioinorganic Chemistry, Cape Town 1 - 4 April 1997

Committee member of Organising Committee of Intern. Symposium on Analytical Science – ANALITIKA 1994 and ANALITIKA, 2002. University of Stellenbosch, South Africa,

Convener and Chairman of Organising Committee for 37th International Coordination

Chemistry Conference (37th ICCC) held in Cape Town, 13th

18th

August, 2006, for the first time in Africa in its more than 50 year history.

RESEARCH, ACADEMIC AND PROFESSIONAL INTERESTS

Published 139 peer reviewed papers to date, together with numerous conference

contributions, posters (> 197), keynote and invited lectures (see detailed list below).

Design and synthesis of platinum group metal (PGM) selective ligands and a study of

their co-ordination of these metal ions in solution.

Design and synthesis of PGM-selective resins for application in separation, recovery and selective pre-concentration from process solutions and effluents

Application of high resolution multi-Nuclear Magnetic Resonance Spectroscopy (NMR) for speciation, solution dynamics and structure elucidation of PGM complexes; Computations of chemical shifts of NMR active metal nuclei

Speciation of platinum group metal complexes in solution, and their chromatographic and other methods of separation

4 Analytical chemometrics, errors in quantitative chemical measurements, and quality

assurance

Design and study of new biologically active complexes of PGMs

Design and synthesis of new nano-materials e.g. super-paramagnetic nano-particles and their possible applications in hydrometallurgy of precious metals

RESEARCH AND INFRASTRUCTURAL FUNDING RAISED

The research carried out in the last two decades, depended largely on adequate funding in derived

from the NRF, THRIP, contract and institutional sources summarised for the years 1999

– 2008 I obtained the following major research funding (shown only are the approximate amounts including major equipment grants in 1994 and 1998, excluding various smaller ad hoc

grants).

Year Source Item Amount/ ZAR

1994 NRF and UCT New Varian UNITY 400 MHz NMR spectrometer R 2.24 mil.

1998 NRF and UCT New Varian Mercury 300 MHz NMR Spectrometer R 1.98 mil.

1999 NRF Running and Bursaries R 96 000

Contract THRIP PGM research Amplats R 290 000 R 290 000

2000 THRIP Running and Bursaries R 250 000 NRF Running and Bursaries R 150 000 Contract

U Stellenbosch Start-up funding and lab repairs R 780 000

2001 NRF Running and Bursaries R 141 000

THRIP

2002 NRF Running and Bursaries R 146 000 2002 NMR Equipment upgrade R 110 000

THRIP Contract research support R 580 000

2003-2004 NRF Running and Bursaries R 204 000 pa R 408 000 Post Doc R 100 000

Repair to Donated 400 MHz NMR system ( NRF ) and

new probe R 400 000 U Stellenbosch contribution of US R 500 000 THRIP and Contract Contract research support R 600 000

2005-2009 NRF Running and Bursaries (5 year) R 838 000 2006/7 NRF New 500 MHz Solid State NMR spectrometer R 3.890 mil

U Stellenbosch. R 3.890 mil

Sasol Grant toward SSNMR R 1.00 mil

2006/7 Contract reserarch Anglo American Research R 360 000 2005/2006 CLH Foundation Post-Doc (R 110 000 pa 3 years) R 330 000 2004/10 Research Support Anloplatinum annual research contribution from ca R250 R2.70 mill

000 pa to R650 000 pa

2009-2011 Research Support Heraeus GmbH, Germany Research Contract (3 years) R558 000

2010 Contribution to ICP Stellenbosch University R 470 000 spectrometer

Own contribution R450 000

Approximate total acquired 1999-2008 R 23,1 mill

TEACHING AND RESEARCH STUDENT DEVELOPMENT

Supervision Masters and Doctoral Research Students: During the period 1981 to date I supervised and promoted the study of 31 Masters

students, eleven with distinction (MSc degree based on a two year research

dissertation) and 14 PhD degrees were awarded on the basis of a 3-4 year research thesis, as well as hosting six Post-Doctoral fellows for 2 – 3 year periods.

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Currently my Platinum Chemistry Research Group consists of 4 PhD and 5 MSc students registered for research degrees, with two Post-Doctoral fellows, (as at

August 2010).

Convener of a new MSc in Analytical Chemistry program by dissertation and

coursework at Stellenbosch University from 2004 to 2008.

I have offered and organised several extra-curricular advanced technical

courses/workshops for continuing education at various times including:

“Nuts and Bolts of Error Theory and Quality Assurance in Chemical Analysis” at

Namakwa Sands Ltd. 1995; Impala Platinum Ltd, 1994; SABS laboratory in Mowbray, Cape Town, 1995.

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Inductively-coupled-plasma Mass Spectroscopy (ICP-MS) Workshop in SA, University of Stellenbosch 3-5 April 2002, in conjunction with Prof Frank Vanhaecke of Gent University, Belgium.

“NMR and the Periodic Table” Advanced course as part of an International Master’s Degree at Leipzig University, Germany (Dec 2006-March 2007). Co-

organised with Prof G Jackson of UCT, “1st

Solid State NMR Workshop”

Stellenbosch University 4-7 Feb 2008, sponsored Royal Society of Chemistry and SA Institute of Chemistry.

Academic teaching and course presented at various levels include

1979-1985 I taught, coordinated and examined a 1st year chemistry course to engineering students (ca 250 students per annum). Over this period some modification to the course content and organisation was initiated in order to streamline the running of the large class and to teach the relevance of basic chemistry more effectively.

Since the inception of the Department of Analytical Science at the University of Cape Town in 1979, under guidance of Professor H M N H Irving, my involvement of establishing a new BSc(Hons) course in Analytical Science has taken the form of a substantial graduate teaching, research projects in this area.

In 1989, I introduced a new 1 semester 3rd year B.Sc. level course on ‘Modern Quantitative Instrumental Analysis’ at UCT. The course was designed to teach BSc students the elements to Quantitative Chemical Analysis with an emphasis on instrumental methods. Lectures include topics on sample preparation, statistical evaluation of accuracy and precision and method validation.

Since joining Stellenbosch University in 2000 establishing the Platinum Metals Chemistry Research Group, I also introduced new undergraduate and BSc(Hons) courses, notably

motivated for the introduction of an BSc(Hons) research project in the 2nd semester of study. In 2004 I was convener of a new MSc degree program in Analytical Chemistry by coursework and dissertation at this University.

In the above context, I have given the following topics advanced graduate and post-graduate courses on at various times in this period.

1. Application of Spectroscopic Methods in Chemistry, including Atomic Spectroscopy. My area of specialisation is Basic and Advanced Multinuclear Nuclear Magnetic Resonance Spectroscopy in Organic and Inorganic Chemistry.

2. The application of chromatographic methods in analytical chemistry. Topics include basic theory of chromatographic separation, applications of Gas Liquid/Solid Chromatography, High Performance Liquid Chromatography, Ion Exchange methods, Gel permeation methods as well as some other related subjects.

3. Error theory, Statistics, and Quality Assurance in the laboratory for Analytical Chemists

6 4. Ligand design and synthesis for coordination of transition metal complexes in the extractive

metallurgy and related areas. 5. The basic chemistry of Extractive Metallurgy. Separation of metal ions by extractive

metallurgy with reference to the Platinum Group Metals. 6. Atomic Absorption and ICP Emission Spectroscopy. Principles and analytical applications. 7. Principles and applications of Flow Injection Analysis. 8. Fundamental Coordination Chemistry of the Platinum Group Metals 9. Advanced NMR and the Periodic Table: BSc(Hons) special topic

In the years 2004-2008 I convened a taught Master’s degree course in advanced analytical science

at Stellenbosch University. This was a successful venture but unfortunately was discontinued in 2008 as a result of the priority to focus on research based Masters Programs, and a lack of

specialist personnel to assist in this course.

MASTERS AND DOCTORAL GRADUATE STUDENT TRAINING BASED ON RESEARCH

Post-Graduate Students: Registered, Graduated/Thesis Examined or in Final Stages. (Given is percentage time for supervision of student by myself and co-supervisor). Not listed are the numerous

are BSc(Hons) project students (on average 1 per year (1987-2012)) and several foreign exchange students from German universities of Heidelberg, Leipzig, Hamburg, Technical Univ. München and

Erlangen who over the years spent periods of 2 months to a year in our laboratory.

Name Degree and Supervision Graduation date / Institution

Miss J E Yates K R Koch 1981 M.Sc. (UCT) (Distinction)

Mr N Ahmed (MINTEK Res. fellow) K R Koch 1983 M.Sc. (UCT) (Distinction)

Miss J M Wyrley-Birch (MINTEK Res. K R Koch 1984 M.Sc. (UCT) (Distinction)

fellow)

Mr K. F. G. Brackenbury (MINTEK Res.

K R Koch 1985 M.Sc. (UCT) fellow)

Miss L Jones K R Koch 1989 M.Sc. (UCT) (Distinction)

Mr E Sydenham K R Koch 1989 M.Sc. (UCT) (Distinction)

Ms Mangaka C Matoetoe K R Koch 1990 M.Sc. (UCT)

Dr S Madelung (Née Schmidt) K R Koch 1990 PhD (UCT)

Dr I Hall (Née Nel) K R Koch 1990 PhD (UCT)

Dr C Sacht,. K R Koch 1990 PhD (UCT)

Dr E Sydenham K R Koch 1994, PhD (UCT)

Miss J du Toit K R Koch 1994 M.Sc. (UCT)

Dr T Grimmbacher K R Koch 1995 PhD (UCT)

Dr David Phaho (Sasol bursary) K R Koch 1995 M.Sc. (UCT) (Distinction)

Dr Derek Auer (MINTEK SCHOLARSHIP) K R Koch 1995 PhD (UCT)

Mr Malcolm Arendse K R Koch 1995 M.Sc (UCT)

Mrs Yali Wang K R Koch 1997 M.Sc. (UCT)

Miss C Lawrence K R Koch 1997 M.Sc. (UCT)

Mr D Handforth K R Koch 1999 MSc (UCT)

Dr Joern Miller K R Koch 2000 PhD (UCT)

2000

Mr A Mautjana, (AECI sponsorship) MSc 100% K R Koch 2000 M.Sc. (UCT) (Distinction)

Mrs L Sundquist (Chief Chem Impala Pt) MSc 100% K R Koch 2000 M.Sc (UCT)

2003

Ms Eunice Matsau (black female) MSc 100% MSc 2003 US Cum Laude

Ms Karen Viljoen MSc 100% MSc 2003 US 2004

Mr H Berhe (Eritrean Male) MSc 60% co-sup: M Bredenkamp 40% MSc 2003 US

Dr Yu Shan Wu (Chinese female) PhD 80% KR Koch and H Klump and V

PhD 2003 UCT Abbrat 20% at UCT

Mr M Mesfin Habtu (Eritrean k male) MSc 50% and Dr R Luckay 50% MSc 2003 US Cum Laude

2004

Mr M Ghebreysu Woldu (Eritrean male) MSc K R Koch 30% and co-sup: 70% J Dillen, MSc Dec US 2004

Mr F Mebrathu (Eritrean male) MSc KR Koch 30% and co-sup R Luckay 70% MSc Dec. 2004

Ms M Burger (White female) MSc 50% and co –sup K Naidoo 50% MSc April US 2004

Dr O Hallale PhD (UCT)50% and co-sup S Bourne 50% PhD (UCT) December 2004

Dr Keith MacIntosch PhD with Dr J Ecsteen; 60% K R Koch 40 % PhD US, Dec. 2004

2005

7 Ms E Archery (Indian female) MSc 100% MSc US, Dec. 2005

Ms J Bruce (White female) MSc 100% MSc, US, April 2005, Cum Laude

Mr R Kloppers MSc 100% MSc US, Dec, 2005

Dr A Westra PhD 100% Dec, PhD, US, 2005

2006

Mr D Hannekom MSc 100% MSc US, March, 2006

2007

Dr S Mtongana (Black male) PhD 100% Dec., PhD, US 2007

Dr G Blewett PhD 100% Dec., PhD US, 2007

Ms N E Dhladlha (Black female) MSc 100% Dec., MSc US 2007

Ms L Retief (White female) MSc 100% Dec., MSc, SU 2007

Mr Ismail Halday (Coloured male) MSc coursework and thesis 100% Dec., MSc., SU 2007

Mr Johnathan Smuts MSc Coursework and thesis 100% Dec., MSc, SU 2007

2008

Dr M Burger (White female) PhD 80%, co-sup 20% Prof Dillen Dec., PhD, SU 2008

Dr Laura Vatta (White female) PhD 100% KR Koch March, PhD, US 2008

Ms L van der Molen (White female) MSc 100% KR Koch Dec., MSc, SU 2008, Cum Laude

Dr J Bruce (White female) PhD 100% KR Koch March, PhD, US 2008

2009

Mr E Lakay (Coloured male) MSc 100% KR Koch March MSc, US, 2009

Mr I Kotze MSc 100% KR Koch Dec 2009, MSc, SU, Cum Laude

2010

Mr J Odendal (Coloured male) MSc 75% Co supervision Dr Delia Haynes March 2010, MSc, SU

Dr P Murray (White male) PhD 100% KR Koch PhD March 2012(SU)

2011

Dr L Retief (White female) PhD 100% KR Koch Graduated March 2011 SU

2012

Ms S Barkhuysen (White female) MSc 100% MSc (SU) 2012, Cum Laude

2013

Mr Leon Engelbrech MSc 100% KR Koch Graduated March 2013, SU Cum Laude

Dr H van Wyk (White male) PHD 75% KR Koch and 25% Dr W Gerber Graduated March 2013 SU

Mr A Willemse (White male) MSc 100% co supervisor Dr Eugene Smit Graduated March 2013 SU

Dr John Davis (Coloured male) PhD 50% KR Koch and %50 Prof M Buehl ( St

Grad St Andrews Uni. and SU Dec. 2013 Andrews UK)

Dr Theo Geshwindt (Coloured male) PhD 75 % KR Koch and 25% Dr W Gerber To Graduate in Dec 2013 SU

Dr E Lakay (Coloured male) PhD 75% KR Koch and 25% Prof B

Graduated, March 2013 SU Klumperman

Dr I Kotze (White male) PhD 100% Prof KR Koch Graduated Dec 2013, SU

2014

Mr I Hadjee MSc 100% KR Koch Graduated March 2014

Mr Henry Nkabyo MSc 1005 KR Koch Graduated in March 2014

Dr J Odendal PhD 100% co supervision Prof L J Barbour Graduated March 2015

Current students 2016 Target for completion

Ms Ilse Barnard MSc 100% KR Koch Graduate December 2016

Dr S Barkhuysen PhD 100% KR Koch Graduated March 2016

Current students

Ms Tsepiso Kuhtlane PhD 50% Dr R Malgas-Enus and 50% KR Koch Target to graduate Dec 2017

Mr Leon Engelbrecht PhD 100% KR Koch Target to graduate March 2017

Mr Henry Nkabyo PhD 100% KR Koch Target to graduate Dec 2017

PEER REVIEWED PUBLICATIONS

1. Organoborates in Organic synthesis: the use of Alkenyl-, Alkynl- and Cyanoborates as synthetic intermediates. G

M L Cragg and Klaus R Koch, J Chem. Soc., Quarterly Reviews, 6, 4, 1977. 2. Ph.D Thesis Heavy Metal Interactions with Nuclei Acid Derivatives: A Nuclear Magnetic Resonance Study, Klaus R

Koch*, University of Cape Town, 1979. 3. A Novel Intra-molecular Hydrogen Bond to a Quasi-aromatic Formazan Ring: Solution Conformation and Molecular

Structure of 3-carboxy-methylmercapto-1,5-diphenylformazan. A T Hutton, H M N H Irving, Klaus R Koch, L R

Nassimbeni and G Gafner, J Chem. Soc., Chem. Comm. 57-58, 1979.

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4. A 1H and

13C NMR study of some cis-[Pt(NH3)2X2]Y2 complexes in aqueous solution. (Y=Cl

- Cl04

- and X = imidazoles,

pyrimidines, 3-substituted pyridines, inosine and guanosine). G V Fazakerley and Klaus R Koch*, Inorg. Chim. Acta, 36, 13-25, 1980.

5. An investigation of the solution conformation of S-adenosyl-L-methionine and S-adensoyl-L-homocysteine using

Lanthanide Shift and Relaxation probes by NMR spectroscopy. G V Fazakerley and Klaus R Koch. Eur. J. Biochem.

1980. 6. Methylmercury derivatives of mercaptopyrimidines. Crystal and molecular structures of methyl, 2-mercapto-4-

amino-5-methylpyrimidinatomercury(II) and methyl, 2-mercapto4-amino-6-pyrimidinato-mercury (II). L R

Nassimbeni, D A Stuart and Klaus R Koch Acta Cryst. B26, 2227-2230, 1980.

7. Oxidation by Mn2O7. An Impressive Demonstration of the Powerful Oxidizing Property of Dimanganese-heptoxide,

Klaus R Koch*, J. Chem. Ed., 59, 973, 1982. 8. A

117Sn and

31P NMR study of trans[Pt(SnCl3)nCl2-n(PCH2CH3)2)2] (n = 1,2) in acetone: the effect of solvent. Klaus R

Koch*, and E Dijkstra, G V Fazakerley Inorg. Chim. Acta Letters, 45, L51-53, 1980. 9. The effect of stannous chloride on the solvent extraction of Pt(II) by triphenylphosphine in methylenechloride.

Klaus R Koch* and J E Yates. Anal. Chim. Acta, 147, 235-245, 1983.

10. A 1H NMR study of the reaction of SnCl2 with cis/trans[PtL2Cl2] (L = 4-methylpyridine) in acetone and N,N-

dimethylformamide solution., Klaus R Koch*, S. Afr. J. Chem., 36(3), 89, 1983. 11. N-substituted benzamides: NMR spectroscopic study of substituent effects. V Mizrahi, Klaus R Koch and T A Modro

S. Afr. J. Chem., 336(3), 89, 1983. 12. The preparation of Chloralide from Chloral Hydrate: A Mechanistic Study. S J Archer, Klaus R Koch and H M N H

Irving, S Afr. J. Chem., 37 63, 1984. 13. The Liquid-Liquid Extraction of Platinum in the Presence of Tin(II) chloride from dilute Hydrochloric Acid into 4-

methyl-2-pentanone. Klaus R Koch* and N Ahmed, Anal. Chim. Acta, 162, 347, 1984.

14. Isomerism in Parabutylchloral: X-ray crystallographic determination. S J Archer, H M N H Irving, Klaus R Koch and L R Nassimbeni, J. Cryst. Spec. Res., 15(4) 332-347, 1985.

15. Immobilisation of Platinum(II) in the form of Chloro(trichlorostannato)platinum(II) Anions by Polyurethane Foams. I Nel and Klaus R Koch*, Analyst 110, 217, 1985.

16. 119

Sn and 1H NMR Evidence for the formation of a Chloro(trichlorostannato)rhodium-hydrido Anion on Extraction

of Rhodium(III)chlorides into 4-methyl-pentan-2-one from Dilute Hydrochloric Acid containing Tin(II)chloride. Klaus R Koch* and J M Wyrley-Birch, Inorg. Chim. Acta, 102(1), L5-L7, 1985.

17. Pentacoordinated Tin(II): Crystal structure of dichloro[2,2':6,2"-terpyridyl]-tin(II). S J Archer, Klaus R Koch*

and L R Nassimbeni, J. Cryst. Spec. Res., 16(4), 449-458, 1986. 18. Alkylating Properties of Phosphate Esters. 1. Oxygen to Nitrogen Methyl transfer in Dimethyl(2-pyridylmethyl)

phosphate. S Cocks, Klaus R Koch and T A Modro, J. Org. Chem., 51, 265-267, 1986. 19. Tin(II)chloride in the Analytical Chemistry of the Platinum Group Metals: From the "Purple of Cassius" to

Polyurethane Foams. K F G Brackenbury, L Jones, I Nel, Klaus R Koch*, and J M Wyrley-Birch, Polyhedron 6(1),

Symposium-in-Print No. 3,71-79, 1987. 20. Polyurethane Foams as Selective Sorbents of the Noble Metals. Quantitative Extraction and Separation of Rhodium

from Iridium in Hydrochloric Acid containing Tin(II)chloride. L Jones, I Nel and Klaus R Koch* Anal. Chim. Acta,

182, 61-70, 1986. 21. Polyurethane Foams as Sorbents for Noble Metals. Selective pre-concentration of small amounts of platinum from

hydrochloric acid containing tin(II)chloride followed by Flame Atomic Absorption Analysis. K F G Brackenbury, L

Jones and Klaus R Koch*, Analyst, 112, 459-462, 1987. 22. Nitrogen Donor Chelates of Bivalent Tin Chloride. Part 11. The Crystal Structures of SnC12(2,2'-bipyridyl) and

SnCl2(1,10-phenanthroline). S J Archer, S Schmidt and Klaus R Koch* Inorg. Chim. Acta, 126 209-218, 1987. 23. The structure of Wallach's compound. Single crystal X-ray structure determination of trans-2,5-

bis(trichlomethyl)-N-(1'hydroxy-2',2',2''-trichloroethyl)-4-imino-1,3-dioxolane. Anne Irving, Harry M N H Irving

and Klaus R Koch, J Cryst. Spec., Res., 17(1), 1163-1171, 1987.

24. Cationic and neutral bis(4-p-tolythiosemicarbazido)-platinum(II)complexes: A preparative as well as 1H and

195Pt NMR

study of the question of cis/trans isomerism. Klaus R Koch* Inorg. Chim. Acta, 147(2) 227-232, 1988.

9 25. Increased urinary excretion of aluminium after drinking tea. S de Villiers, F Monteagudo and M A B Pougnet and

Klaus R Koch* Nature 333 , (6169), 122, 1988. 26. Determination of Al levels in Tea And Coffee by means of ICP-OES and GFAAS. S de Villiers and M A B Pougnet,

Klaus R Koch* Analyst, 114, 911-913, 1989.

27. Quantitative Determination of Aluminium in Tea by means of 27

Al Nuclear Magnetic Resonance Spectroscopy. Klaus R Koch*, Analyst 115, 823-825, 1990.

28. Bis(N-piperidyldithiocarbamato)copper(III) hexafluorophosphate: an unexpected product from the

disproportionation of 1,12-bis(N-piperidyl)-2,5,8,11-tetrathiadodeca-1,12-dithionato-Cu-(I)-PF6. C Sacht and M R

Caira, Klaus R Koch*, Acta. Cryst., C47, 26-29, 1991. 29. Natural Occurrence of some FUSARIUM mycotoxins in Corn from Low and High Esophageal Cancer Prevalence

Areas of the Transkei, Southern Africa. E W Sydenham, P G Thiel, W F O Marasas, G S Shephard, D J van

Schalkwyk and Klaus R Koch, J. Agric., Food Chem., 38, 1900-1903, 1990. 30. An Investigation into the Occurrence of the Toxic Amino Acid Gizzerosine in Fish Meal. W W D Wagener, J P H

Wessels, B J Post and Klaus R Koch. J. Sci. Food Agric, 54, 147-152, 1991. 31. Crystal structure of [1,8-bis(quinoliniumoxy)-3,6-dioxaoctane.(H2O)2](BF4)2: Hydrated quinolinium podand salt or

hydronium ion complex? C Sacht, S J Archer and Klaus R Koch*, Inorg. Chim. Acta, 178(1), 77-81, 1991. 32. A Multinuclear NMR study of Pt(II) complexes of N-phenyl and N-(3-allyl)substituted 2-(2-pyridine-

methylene)hydrazinecarbothioamides. Klaus R Koch*, J. Coord. Chem., 22, 289-298, 1991.

33. On the Formation of the [RhH(SnCl3)5]3 - complex anion: Direct

119Sn NMR Evidence for the Facile Protonation of the

[Rh(SnCl3)5]4-

species Extracted into Chloroform. Iris Hall and Klaus R Koch*, Polyhedron, 10(14), 1721-1722, 1991.

34. Solvolysis of the Difluoro(1-10,phenanthroline)boronium Cation in DMSO: A 11

B and 19

F NMR study. S Madelung and Klaus R Koch*, Polyhedron, 10(18), 2221-2223, 1991.

35. 13

C and 195

Pt NMR of para-substituted N,N-dialkyl-N'-benzoylthioureas and their cis-[ML2] complexes M = Pd(II)

and Pt(II)., M C Matoetoe and Klaus R Koch*, Mag. Res. Chem., 29, 1158-1160, 1991. 36. The Identification of Indigo-Related Pigments Produced by Eschericia Coli from a cloned Rhodococcus Gene, S J

Hart, Klaus R Koch and D R Woods, J. General Microbiology, 138, 211-216, 1992. 37. Coordination Chemistry of Quinolyloxy Terminated Podands in the Solid and Solution State: The Crystal and

Molecular Structures of Potassium Tosylated Potassium Isothiocyanate Complexes of 1,8-Bis(quinolyloxy)-3,6-

dioxaoctane, Klaus R Koch*, M L Niven and C Sacht, J. Coord. Chem., 26, 161-176, 1992.

38. 119

Sn NMR Characterization of the Series of Complex [Pt(SnClxBry)5]3-

Anions (x+y=3) Extracted into

Chloroform using a Liquid Anion Exchanger, Klaus R Koch*, Magnetic Resonance in Chemistry, 30, 158-162, 1992. 39. Membrane Fluidity of Platelets and Erythrocytes in Patients with Alzheimer's Disease and the Effect of Small

Amounts of Aluminium on Platelet and Erythrocyte Membranes, S J van Rensburg, M E Carstens, F C Potocnik, A K

Aucamp, J J F Taljaard and Klaus R Koch, Neurochemical Research, 17(8), 825-829, 1992. 40. Transition Metal Complexes of Oligothioether Quinolyloxy Terminated Podands: Part 2 Crystal and Molecular

Structure of Copper(II)-1,8-bis(quinolyoxy)-3,6-dithiaoctane diperchlorate trihydrate, C Sacht, M Caira and Klaus

R Koch*, J. Coord. Chem., 29, 97-108, 1993.

41. Deceptively simple Pt complexes of N,N-dialkyl-N'-benzoylthiourea: A 1H,

13C and

195Pt NMR study of their acid

base chemistry in solution and the molecular structure of cis-bis(N,N-di(n-butyl)-N'-benzoylthiourea)platinum(II), M C Matoetoe, Anne Irving, and Klaus R Koch*, Inorg. Chim. Acta., 206, 193-199, 1993.

42. Intramolecular Hydrogen-bond Controlled Unidentate Coordination of Potentially Chelating N-Acyl-N'alkyl-

thioureas: Crystal Structure of cis-bis(N-benzoyl-N'-propylthiourea)-dichloroplatinum(II), S Bourne and Klaus R

Koch*, J. Chem. Soc. Dalton Communication, 2071-2072, 1993.

43. Simultaneous Determination of the Platinum Group Metals in Strongly Acid Solution by Flow Injection Analysis, D

Auer and Klaus R Koch*, Talanta, 402 (12), 1975-1980, 1993. 44. An Assessment of the Distribution, Chemical Composition and Seasonal Variation of Potential Nutrients in Foam

and Water Samples from Western Cape Rivers. S Churms, B Davies, A T Spit and Klaus R Koch*, S. Afr. J Science,

90, 22-27, 1994.

10 45. The Coordination Chemistry of Zinc: A Review of the 1990 Literature, Coordination Chemistry Reviews, Klaus R

Koch*, 134, part 2, 99-131, 1994 46. Synthesis and Crystal Structure of trans-bis(N-naphthoyl-N’,N'-dibutylthioureato)-platinum(II). First Example of

Trans Chelation, Klaus R Koch*, C Sacht and M Caira, J. Chem. Soc. Dalton Communication, 785-786, 1994. 47. Hydrophilic Platinum Complexes of N-2-hydroxyethyl- and N,N-di(2-hydroxyethyl)-N'-benzoylthiourea ligands.

Crystal and molecular structure of N,N-di(2-hydroxyethyl)-N'-benzoylthiourea. Klaus R Koch*, C Sacht and S

Bourne. Inorg. Chim. Acta., 232(1-2), 109-115, 1995. 48. The Potential of Alkaline Hydrolysis for the Removal of Fumonisins from Contaminated Corn. E W Sydenham, P G

Thiel, S Stockenström, G S Shepherd and Klaus R Koch*, J. Agric. Food. Chem., 43. 1198-1201, 1995. 49. A Treasure Trove of New Ligands for the Platinum Group Metals: Deceptively simple Coordination Chemistry of N-

acyl-N'-alkyl and N-acyl-N'N'-dialkylthioureas. Klaus R Koch*, C Sacht, T Grimmbacher and S Bourne. South

African Journal of Chemistry, 48, 71-77, 1995. 50. Unsymmetrical Bidentate Ligands in Rhodium Chemistry: Crystal Structure of the First

Carbonyltriphenylphosphinerhodium(I) complex with N,N-dibenzyl-N-benzoylthioureato as S,O-donor Ligand. Klaus

R Koch, M C Matoetoe, A Roodt and J G Leipoldt. Rhodium Express, 7-8, 39-42, 1994.

51. Preparation and Isolation of the Partially Hydrolised moiety of Fumonisin B1. E W Sydenham, P G Thiel. G S

Shephard, Klaus R Koch and T Hutton. J. Agric. Food Chem., 43, 2400-2405, 1995. 52. The effect of Acid and Steam Treatment of Na and H-mordenite on their Structural, Acidic and Catalytic

Properties, A W O'Donovan, C T O'Connor and Klaus R Koch*, Microporous Materials, 5, 185-202, 1995.

53. Magnetic non-equivalence in phosphate esters. Solvent effects on the 1H NMR spectrum of dibenzyl-

2pyridalphosphate. M Mentz, T A Modro, Klaus R Koch and P H van Rooyen, J. Mol. Struct., 380, 125-131, 1996. 54. High-symmetry inclusion compounds with mixed guests. M R Caira, A Coetzee, Klaus R Koch, L R Nassimbeni and F

Toda, J Chem. Soc. Perkin Trans. 2, 569-572, 1996. 55. Unsymmetrical Bidentate Thiourea Ligands in Rhodium Chemistry: Crystal structure of O, S-(N,N-dibenzyl-N’-

benzoylthioureato)triphenylarsine-carbonylrhodium(I). Klaus R Koch, G Kemp, A. Roodt and W Purcell Rhodium

Express, 16, 17-22, 1996. 56. Unprecedented N,S,O-co-ordination of N-benzoyl-N'-phenylthiourea (H2L

2) bridging two Rh(I) centres: crystal

structure of the acetone solvate of [(PPh3)2(CO)Rh{( N)- -L2-( O S)}Rh(PPh3)CO]. Klaus R Koch*, and Gerdus Kemp,

Andreas Roodt, Walter Purcell, J. Chem. Soc.,Dalton Comm., 4481-4483, 1997. 57. Synthesis and spectral studies of platinum complexes of ring substituted 4-phenyl-thiosemicarbazides. M J

Arendse, I R Green and Klaus R Koch*, Spectrochim Acta, 53A(10), 1537-1545, 1997.

1998

58. 1H and

195Pt NMR study of the protonation mediated mono vs bidentate co-ordination of Pt(II) by N-acyl-

N',N'-dialkylthioureas. Klaus R Koch*, T Grimmbacher and C Sacht, Polyhedron, 17(2-3), 267 - 274, 1998. 59. Self-association of new mixed-ligand [Pt(diimine)N-benzoyl-N’,N’-di(n-butyl)-thiourea]PF6 complexes in

acetonitrile solution. Klaus R Koch, C Sacht and C. Lawrence. J. Chem. Soc. Dalton Trans., 689-695, 1998. 60. Protonation mediated interchange between mono and bidentate coordination of N-benzoyl-thioureas: crystal

structure of trans-bis-(N-benzoyl-N’,N’-dibutylthiourea-S)diiodo-platinum(II). Klaus R Koch* and Susan Bourne,

J. Mol. Struct., 441(1), 11- 16, 1998.

61. Synthesis and characterisation of 5,11,17-tri-(tert-butyl)-23-dihydroxyboryl-25,26,27,28-tetrahydroxy-

calix[4]arene as a molecular scaffold for chiral boron Lewis acids. R. Hunter, Klaus R Koch and B Verblun, S. Afr.

J. Chem., 51(4), 1, 1998. 62. Self-assembly of 2:2 and 3:3 metallomacrocyclic complexes of platinum(II) with symmetrical, bipodal N’,N’,N’”N’”’-

tetraalkyl-N,N”-phenylendicarbonylbis(thiourea). Klaus R. Koch*, S A Bourne, A Coetzee and J Miller, J. Chem.

Soc., Dalton Trans., 18, 3157, 1999

63. Platinum(II) and Palladium(II) complexes of N-benzoyl-N’-propylthioureas: Synthesis and geometric isomer

distribution of [M(H2L-S)2X2] (M = Pt(II), Pd(II); X = Cl-,Br

-,I

-). Crystal structure of trans-bis(N-benzoyl-N’-

propylthioureato)-dibromopalladium(II). Klaus R. Koch*, Y.Wang and Anita Coetzee. J. Chem. Soc., Dalton Trans., 1013-1016, 1999.

11

PAPERS FROM 2001 ONWARDS: STELLENBOSCH UNIVERSITY 64. Modelling Platinum Group Metal Complexes in Aqueous Solution. A Lienke, G Klatt, D J Robinson, Klaus R Koch* and

K Naido*, Inorganic Chemistry 40, 2352-2357,2001. 65. Self-assembly of 2:2 metallamacrocyclic complexes of Ni

II and Pd

II with 3,3,3’,3’-tetraalkyl-1,1’-

isophthaloylbis(thioureas). Crystal and molecular structures of cis-[Pd(L2-S,O)]2 and the adducts of the

corresponding NiII

complex: [Ni(L1-S,O)(pyridine)2]2 and [Ni(L

1-S,O)(4-dimethylaminopyridine)2]2 Klaus R Koch*, J

Miller, O Hallale, J Bacsa and S Bourne, J. Molecular Structure, 561, 185-196, 2001. 66. New chemistry with old ligands: N-alkyl-N’-acyl(aroyl)thioureas in co-ordination, analytical and process chemistry

of the platinum group metals, Klaus R. Koch*, Coordination Chemistry Reviews, 216-217, 473-488,2001.

2002 67. Determination of the nucleophilic reactivity of para substituted N-propyl-N’-benzoylthioureas towards trans-

[Pt(py)2Cl2]. Klaus R. Koch*, Jörn D.S. Miller and Oliver Seidelmann. Inog. Chim. Acta , 331, 136-142, 2002. 68. On the liquid-liquid extarction of Pt(IV/II) from hydrochloric acid by N-acyl(aroyl)-N’-alkyl- ans N-acyl-N’,N’-

dialkythioureas: A multinuclear (1H,

13C AND

195Pt) NMR speciation study. Klaus R Koch*, Jörn Miller and Arjan N

Westra, Proceedings of the International Solvent Extraction Conference, ISEC-2002, Cape Town, Eds., K Sole, PM Cole, J S Preston and D J Robinson, vol 2, pp.327– 334, 2002.

69. Geometric hydration shells for anionic platinum group metal chloro-complexes. Kevin J. Naidoo* Günter Klatt, Klaus R. Koch*, and David J. Robinson, Inorganic Chemistry, 41,1845-1849, 2002.

70. Highly selective and efficient extraction of Pd,Pt and Rh from Precious Metals containing industrial effluents,

Jurjen Kramer, Willem L. Driessen, Klaus R. Koch* and Jan Reedijk*, Hydrometallurgy 64, 59-68, 2002.

2003 71. Unambiguous assignment of the E,Z configurational isomers of platinum complexes of N,N-dialkyl-N’-acyl(aroyl)thioureas

by means of 1H detected

13C-

195Pt correlation NMR spectroscopy. Klaus R Koch * S. Mtongana,

E. Hoffmann and D. Argyroupoulis. Magnetic Resonance in Chemistry 41, 102-106, 2003. 72. Tailoring N,N-dialkyl-N’-acyl-thioureas to yield ligands suitable for platinum group metal separation and pre-

concentration from acid aqueous process effluents: New hydrophilic Pt(II), Pd(II) and Rh(III) complexes of N,N-

dialkyl-N’- (2,2-dimethylpropyl)-thioureas and their separation by reversed-phase HPLC. Klaus R Koch*, Susan

Bourne, Joern Miller, Alpheus N. Mautjana and Arjan Westra. J. Chem. Soc., Dalton Trans., 1952 – 1960, 2003.

IF 3.012

73. Contact Ion Pair between Na+ and PtCl6

2- Favoured in Methanol. Kevin J Naidoo*, Anton S. Lopis, Arjan N. Westra, David

J Robinson and Klaus R Koch*, J. Amer. Chem. Soc. Communication, 125, 13330-13331, 2003. IF 7.693 74. LASER ABLATION – INDUCTIVELY COUPLED PLASMA – DYNAMIC REACTION CELL – MASS SPECTROMETRY

(LA-ICP-DRC-MS) FOR THE DETERMINATION OF Pt, Pd AND Rh IN Pb FIRE ASSAY BUTTONS FROM

PLATINIFEROUS ORES. Frank Vanhaecke*, Martín Resano°, Esperanza García-Ruíz°, Lieve Balcaen, Klaus R Koch,

and Kieth McIntosch., J Anal. Atom. Spec., 19, 632-638 2003. IF 3.630

75. Highly selective and efficient recovery of Pd Pt and Rh from precious metal-containing effluents with silica-based

(poly)amine ion exchangers. Jurjen Kramer, Willem L. Driessen, Klaus R. Koch* and Jan Reedijk*, Separation

Science and Technology 39(1), 63-75, 2004. 76. In vitro antimalarial activity of a series of cationic 2,2’-bipyridyl- and 1,10-phenanthroline-

platinum(II)benzoylthiourea complexes. Timothy J. Egan*, Klaus R. Koch*, Paul L. Swan, Cailean Clarkson, Donelly

A. Van Schalkwyk and Peter J. Smith J. Medicinal Chemistry, 47, 2926-2934, 2004. IF 5.115

77. Rapid Major Component Analysis and Potential Authentication of South African Olive Oils by Quantitative 13

C

Nuclear Magnetic Resonance Spectroscopy. Jean M. McKenzie and Klaus R. Koch*, South. African. J. Science, 100(6/7), 349-354, 2004.

78. Intramolecular H-bond directed coordination: First examples of trans-bis(N-propyl-N’-benzoylthiourea)-

diiodoplatinum(II) and trans-bis(N-propyl-N’-benzoylthioureatodibromo-platinum(II). Arjan N. Westra, Catharine

Esterhuysen and Klaus R. Koch*, Acta Cryst., C60, m395-m398, 2004, 79. First bipodal thiocarbamic acid ester, O,O’-diethyl-N,N’-(p-phenylenedicarbonyl)-bis(thiocarbamate). Gavin

Blewett, C Esterhuysen, M B Breedenkamp, Klaus R Koch*, Acta Cryst. C60, o862-o864, 2004.

2005 80. Hydrogen-bonding networks in a bipodal acyl-thiourea and its Ni

II 2:2 metallamacrocyclic complex. Susan A

Bourne*, Oren Hallale, Klaus R Koch*, Crystal Growth and Design, 5(1), 307-312, 2005. IF 4.339

12

81. Photo-induced isomerisation of cis-[M(L-S,O)2] (M = PtII

and PdII

) complexes of N,N-diethyl-N’-3,4,5-

trimethoxybenzoylthiourea: Key to preparation of the trans isomer., Dirk Hanekom, Jean M. McKenzie, Nocky M. Derix, and Klaus R. Koch* Chem Comm., 2005, 2-5. IF 4.521

82. Reaction of Halogens with Pt(II) Complexes of N-alkyl- and N,N-dialkyl-N’-benzoylthioureas: Oxidative Addition

and formation of an unusual I2 Inclusion Compound. Arjan N. Westra, Susan A. Bourne, Catharine Esterhuysen and

Klaus R. Koch*, Dalton Transactions, 2162-2172, 2005. IF 3.012 83. Metallamacrocyclic complexes of Ni(II) with 3,3,3’,3’-tetraalkyl-1,1’-aroylbis(thioureas): crystal and molecular

structures of a 2:2 metallamacrocycle and a pyridine adduct of the analogous 3:3 complex. Oren Hallale, Susan A.

Bourne and Klaus R. Koch*, CrystEngComm., 7(25), 161-166, 2005.

84. The first bipodal thiocarbamic acid ester, O,O’-diethyl-N,N’-(p-phenylenedicarbonyl)-bis(tiocarbamate) Gavin

Blewett, C Esterhuysen, M Breedenkamp and Klaus R Koch*, Acta Cryst. C60, o862-o864, 2004 85. A

195Pt NMR and computational study towards understanding the solvation/hydration spheres of PtCl6

2- and

PtBr62-

anions. Arjan N. Westra , David J. Robinson , Anton S. Lopis ,Kevin J. Naidoo and Klaus R Koch*, Proceedings of the International Solvent Extraction Conferenc, ISEC-2005, 2005.

86. Intercalation into the DNA double helix and in vivo biological activity of water- soluble planar [Pt(diimine)(N,N-

dihydroxyethyl-N’-benzoylthioureato)]+Cl

- complexes: A study of their thermal stability, their CD spectra and

their gel mobility. Yu-Shan Wu, Klaus R Koch*, Val Abratt, and Horst Klump*, Archives on Biochemistry and Biophysics, 440, 28-37, 2005.

87. First Metallamacrocyclic Complexes of Pt(IV) with 3,3,3’,3’-tetraalkyl-1,1’-phenylenedicarbonylbis(thiourea):

Synthesis by Direct or Electrochemical Oxidative Addition of I2, Br2 and Cl2. Arjan N. Westra, Susan A. Bourne,

and Klaus R. Koch*. Dalton Trans., 2916-2924, 2005. IF 3.012 88. 1,1-Dibenzoyl-3,3-dimethylthiourea, Gavin Blewett, C Esterhuysen, M W Breedenkamp, Klaus R Koch, Acta Cryst.

E61, o4042-o4044, 2005.

89. High and selective Ag(I) bulk liquid membrane transport with N,N-diethyl-N’-camphanyl thiourea structure of the

complex. Haile G. Berhe, Susan A. Bourne, Martin W. Bredenkamp, Catharine Esterhuysen, Michael M. Habtu, Klaus R. Koch and Robert C. Luckay, Inorganic Chemistry Communications, 29, 1416-1423, 2005. IF 1.787

90. Doubly Linked 1D Coordination Polymers derived from 2:2 Metalla-macrocyclic Ni(II) Complexes with a Bipodal

Acylthiourea and exo-bidentate N-Donor bridging ligands: Toward Potentially Selective Chemical Sensors? Oren

Hallale, Susan A. Bourne and Klaus R. Koch*, New Journal of Chemistry, 2005, 29, 1416-1423. IF 2.647

91. Polymorphism in bipodal O,O’-di-methyl N,N’-(m-phenylenedicarbonyl)-bis(thiocarbamate). Gavin Blewett, Martin W. Bredenkamp and Klaus R Koch*, Acta Cryst, c61, 0469-0472. 2005

92. 1,1-dibenzoyl-3,3-dimethylurea. Gavin Blewett, Catharine Esterhuysen, Martin W Bredenkamp, and Klaus R Koch

Acta Cryst. E61, 04042-04044, 2005. 93. Guanidinium functionalised anion exchangers significantly improve the selectivity of platinum group metal recovery

from process solutions. Jurjen Kramer, Nomasonto E. Dhladhla, and Klaus R. Koch*, Separation, Purification

Technology, 49, 181-185,2006. 94. Tetrkis(m2-2,2-dimethylpropanoato-k2-O,O’)bis[(pyridine-kN)copper(II)], G Blewett, C Esterhuysen, M B

Breedenkamp and Klaus R Koch*, Acta. Cryst., E62, m420-m422, 2006. 95. Integrating pyrometallurgy and robotic systems engineering: Fully automated fire assay laboratory for rapid PGE

analysis: KS McIntosh, D. Auer, Klaus R Koch, and JJ Eksteen, Minerals Engineering, 19, 219-231, 2006. 96.

195Pt NMR and advanced computational methods as tools towards the understanding of speciation and

hydration/solvation of [PtX6]2-

(X= Cl-, Br

-) anions in solution. Klaus R Koch*, M R Burger, J Kramer and A N Westra,

Dalton Trans., 2006, 3277-3284. IF 3.012 SPECIAL DALTON COVER DESIGN

97. A 195

Pt NMR study of the speciation and preferential extraction of Pt(IV)-mixed halide complexes by

diethylenetriamine modified silica-based anion exchangers. Jurjen Kramer and Klaus R. Koch* Inorg. Chem. 2006,

45(19), 7843-7855. IF 3.911 98. Magnetic nanoparticles: properties and applications, L.LVatta, K. R. Koch* and R. D. Sanderson. Pure and Applied

Chemistry, 2006, 79(9), 1791-1799. IF 1.920 99. N-(4-chlorobenzoyl)-N’,N’-diethylthiourea, Jean M McKenzie and Klaus R Koch, Acta Cryst., 2006, E62, o4263-

o4264.

13 100. Competitive bulk liquid membrane transport and solvent extraction of some transition and post-transition metal ions

using acylthiourea ligands as ionophores. Michael M. Habtu Susan A. Bourne , Klaus R. Koch and Robert C. Luckay,

New J. Chem. Research. 2006, 30, 1155-1162. 101. N-Pivaloyl-N',N'-di-n-butylthiourea , Jan Dillen, Mengistu Ghebreysus Woldu, and Klaus R. Koch, Acta Cryst.,

2006, E62(11), 04819-o4820, 102. High and selective Ag(I) bulk liquid membrane transport with N,N-dietyl-N’-camphanylthiourea and strcture of

this complex. H G Behre, S A Bourne, M W Breedenkamp, C Esterhuysen, M H Habtu, Klaus R Koch and R Luckay,

Inorganic Chemistry Communications, 2006, 9, 99-102.

103. N,N-(heptane-2,6-diyl)-N’-(3,4,5-methoxybenzoyl)thiourea. Jan Dillen, M G Woldu and Klaus R Koch Acta Cryst.

2006, E26, o52250-o5227, 104. N-acetyl-N’,N’-(butane-1,4diyl)thiourea, Jan Dillen, M G Woldu and Klaus R Koch, Acta Cryst. 2006, E26, o5228-

o5229. 105. DNA Mediated bio-mineralization of a new planar Pt-complex. H.H. Klump, Klaus R Koch and C. T. Lin, South

African Journal of Science, 2006, 102, 264-266.

2007 106. An investigation into the potential large-scale continuous magnetite nanoparticle synthesis by high pressure

impinging stream reactors. Laura L Vatta, Ron D. Sanderson and Klaus R. Koch*, J. Mag. Mag. Mat, 2007, 311,

114-119.

107. Diethylenetriamine functionalised silica coated magnetite nanoparticles for selective palladium ion extraction from

aqueous solutions, Laura L. Vatta, Jurjen Kramer, and Klaus R. Koch*, Separation and Purification Technology,

2007, 42(9) 1-18. 108. Cadmium (II) complexes of N,N-diethyl-N’-benzoylthio(seleno)urea as single source precursors for the

preparation of CdS and CdSe nanoparticles., Jocelyn C. Bruce, Neerish Revaprasadu, and Klaus R. Koch*. New J.

Chem., 2007, 31, 1647-1653.

109. 195

Pt NMR Chemical Shift Trend Analysis as a Method to Assign new Pt(IV)-Halohydroxo Complexes, Jurjen

Kramer and Klaus R. Koch*., Inorg. Chem., 2007 46, 7466-7476. 2008

110. N,N-dibutyl-N’-benzoylselenourea and its cis-[Pd(L-Se,O)2] complex. Jocelyn C. Bruce and Klaus R. Koch*, Acta

Cryst. 2008, C64, m1-m4. 111. Fourier Transform Infrared Spectroscopy in Grape and Wine Analysis. Rolene Bauer, Hélène Nieuwoudt, Florian F.

Bauer, Jens Kossmann, Klaus R. Koch and Kim H. Esbensen, Analytical Chemistry, 1371-1379, 2008. 112. Bipodal 1,1’-acyl-3,3,3’,3’-tetraalkyl-bis(thiourea)ligands with flexible C3,C4 and C6 Spacer Groups. S Stockmann,

J Bruce, J Miller and Klaus R Koch*, Acta. Cryst. 2008, C64, o166-o170.

113. 195

Pt NMR isotopologue and isotopomer distributions of [PtCln(H2O)6 − n]4 −

n (n = 6,5,4) species as a fingerprint

for unambiguous assignment of isotopic stereoisomers. Wilhelmus J. Gerber, Pieter Murray and Klaus R. Koch*, Dalton Trans. 2008, 4113-4117.

114. Synthesis, EPR spectrum and X-ray structure of tetra-n-butylammonium bis(benzene-1,2-dithiolato(2–)-

κ2S,S’)platinate(III) .M. M. Bélombé

,, J. Nenwa, E. Hey-Hawkins , P. Lönnecke , P. Strauch , and Klaus R. Koch,

Polyhedron, 27, 2008, 3688-3692. 115. The Potential use of Hydrocarbon Magnetic liquids in solvent extraction. Laura L. Vatta, Klaus R. Koch, and

Kathryn C. Sole. Proceedings of ISEC 2008, International Solvent Extraction Conference, Editor-in-Chief:

Bruce A Moyer, Canadian Institute of Mining, Metallurgy and Petroleum, Montreal, Canada, Vol. I & II, pp 1513-

1518, 2008. [ISBN : 1- 894475 - 80 (volume 1) and 1- 894475 - 81 (volume 2)]

116. A Novel Approach to the Rapid Assignment of 13

C NMR Spectra of Major Components of Vegetable Oils such as

Avocado, Mango Kernel and Macadamia Nut Oils. Liezel Retief, Jean M. McKenzie, Klaus R. Koch*, Mag. Reson.

Chem., 47, 771–781, 2009. (our paper featured in “spectroscopy NOW” as a highlight

http://www.spectroscopyNOW.com.) 117. Self-association and non-covalent outer-sphere complex formation between [Pt(1,10-Phenanthroline)(N-pyrrolidyl-

N-(2,2-dimethylpropanoyl)thiourea)]+ and fluoranthene through p-cation interactions: A high resolution

1H and

DOSY NMR study. Izak A. Kotze, Wilhelmus J. Gerber, Jean M. Mckenzie and Klaus R. Koch*, Eur. J. Inorg. Chem., 2009, 1626-1633.

14

118. Identification and quantification of major triglycerides in selected South African Vegetable oils by 13

C NMR

spectroscopy, by L Retief, J M McKenzie and Klaus R Koch*, in monograph “Magnetic Resonance in Food Science”,

edited by M Guõjónsdottir, P Belton an G Webb, Royal Society of Chemistry, (ISBN 978-0-85404-177-6), 2009,

pp 151.

119. A comparison of experimental and DFT calculations of 195

Pt NMR shielding trends for [PtXnY6-n]2-

( X = Cl, Br and

Y= F, I) anions. What is the origin of discrepancies between computed and experimental 195

Pt shielding trends? M. R. Burger, J. Kramer, H. Chermette and K. R. Koch* Magnetic Resonance in Chemistry, 2010, 48(51) : 38-47.

120. Extraction and transport of Gold(III) using some acyl(aroyl)thiourea ligands and a crystal structure of one of the

complexes. Robert C. Luckay*, Fanuel Mebrahtu, Catharine Esterhuysen and Klaus R. Koch, Inorg. Chem.

Commun.,13 (2010) 468–470. 121. “Packing motifs in organic ammonium carboxylate salts: extension of the ring-stacking and ring-laddering concepts”.

James A. Odendal, Jocelyn C. Bruce, Klaus R. Koch and Delia A. Haynes, Cryst Eng Comm., 1-12, 2010..

122. A 195

Pt NMR study of the oxidation [PtCl4]2-

with chlorate, bromate, and hydrogen peroxide in acidic aqueous

solution. Pieter Murray and Klaus R. Koch*. Journal of Coordination Chemistry, 63(14–16), 2010, 2561–2577 123. Separation and quantification of [RhCln(H2O)6−n]3−n (n = 0–6) complexes, including stereoisomers, by means of

ion-pair HPLC–ICP-MS. W J. Gerber, Klaus R. Koch, H E. Rohwer, E C. Hosten and T E. Geswindt. Talanta, 82

(2010) 348–358. 124. One-dimensional supramolecular architectures derived from dinuclear (bis-N-acylchalcogenoureato)-copper(II)

complexes. Axel Rodenstein, James A. Odendal, Reinhard Kirmse and Klaus R. Koch* , Inorganic Chemistry

Communications 14 (2011) 99–102. 125. A kinetic and thermodynamic study of the unexpected comproportionation reaction between cis-

[OsVIII

O4(OH)2]2-

and trans-[OsVI

O2(OH)4]2-

to form a postulated [OsVII

O3(OH)3]2-

complex anion. Theodor E.

Geswindt, Wilhelmus J. Gerber, Hans E. Rohwer and Klaus R. Koch. Dalton Trans., 2011, 40, 8581–8588

126. A robust method for speciation, separation and photometric characterization of all [PtCl6-nBrn]2-

(n = 0 – 6) and [PtCl4-nBrn]2-

(n = 0 – 4) complex anions by means of ion-pairing RP-HPLC coupled to ICP-MS/OES,

validated by high resolution 195

Pt NMR spectroscopy. Pieter-Hugo van Wyk, Wilhelmus J. Gerber and Klaus R. Koch*.

Analytica Chimica Acta 704 (2011) 154–161.

127. Direct determination of metal to halide mole ratios in platinum complex anions [PtCl6-n Brn]2-

(n = 0–6) by means of

HPLC-ICP-OES using Cl, Br and Pt emissions of all separated species. Pieter-Hugo van Wyk, Wilhelmus J. Gerber and Klaus R. Koch*, J. Anal. At. Spectrom., 2012, 27, 577.

128. 35

Cl/37

Cl isotope effects in 103

Rh NMR of [RhCln(H2O)6-n]3-n

complex anions in hydrochloric acid solution as a

unique ‘NMR finger-print’ for unambiguous speciation. Theodor E. Geswindt, Wilhelmus J. Gerber, D. Jacobus Brand, Klaus R Koch*, Analytica Chimica Acta, 730 (2012) 93– 98.

129. On the Origin of 35/37

Cl Isotope Effects on 195

Pt NMR Chemical Shifts. A Density Functional Study. John C.

Davis, Michael Bühl*, and Klaus R. Koch*, Journal of Chemical Theory and Computation, 2012, 8, 1344−1350 130. Patent Application No PCT/IB2012/000078 for “Modified ploy(styrene-co-maleic-anhydride) and uses (fro

selective precious metal absorption) thereof. (provisional application No 2011/00551) Klaus R Koch*, Eugene Lakay

and Bert Klumperman*. 2012.

131. 35/37

Cl and 16/18

O isotope resolved 195

Pt NMR: unique spectroscopic ‘fingerprints’ for unambiguous speciation of

[PtCln(H2O)6-n]4-n

(n = 2–5) complexes in acidic aqueous solution. Pieter Murray, Wilhelmus J. Gerber and Klaus R. Koch*, Dalton Trans., 2012, 41(35), 10533 – 10542

132. PlatinumII/IV

and rhodiumIII

chemistry viewed through new eyes: What new secrets can 195

Pt and 103

Rh NMR

spectroscopy reveal about speciation in as relevant to refining solutions? Klaus R Koch*. Proceedings of 5th

International Platinum Conference, organized by the Southern African Institute of Mining and Metallurgy,

Symposium Series S72 (ISBN 978-1-920410-32-2), 2012, Vol 2 page 715.

133. Cation- mediated aggregation of water-soluble [PtII

(diimine)(L-S,O)]+ complexes : From dimers to the formation

of nano-structured aggregates in water studied by DOSY 1H NMR and TEM. Izak A Kotzé, Wilhelmus J Gerber,

Dirk J Brand and Klaus R Koch*, Dalton Trans., 2013, 42, 3791–3801. DALTON COVER ARTICLE Volume 42 | Number 11 | 21 March 2013

134. Probing Isotope Shifts in 103

Rh and 195

Pt NMR Spectra with Density Functional Theory. John C. Davis, Michael

Buhl,* and Klaus R. Koch*, J. Phys. Chem. A 2013, 117, 8054−8064.

15

135. UHPLC-ESIQTOFMS as a means of speciation of [PtCl6-nBrn]2-

(n = 0 – 6) and their mono-aquated [PtCl5-

nBrn(H2O)]-(n = 0 – 5) anions in aqueous solution at low concentrations. P-H van Wyk, J B. van Dyk, W J. Gerber, M

Stander, A de Villiers, and Klaus R. Koch*, Rapid Communications of Mass Spectrometry, 2014, 28, 505–519. 136. Oxidation mechanism of tetrachloroplatinate(II) by hydrogen peroxide in hydrochloric acid solution. Pieter

Murray, Klaus R Koch and Rudi van Eldik*. Dalton Trans. 2014, 43(17), 6308-6314. DALTON COVER PAGE

ARTICLE, 43, May 2014. 137. Light induced cis/trans isomerization of cis-[Pd(L-S,O)2] and cis-[Pt(L-S,O)2] complexes of chelating N,N-dialkyl-N′-

acylthioureas: key to the formation and isolation of trans isomers. Henry A. Nkabyo, D. Hannekom, Jean McKenzie

& Klaus R Koch. Invited paper J Coordination Chemistry, 2014, 67, 4039–4060.

138. The Fundamental flaw of the HSAB principle is revealed by a complete speciation analysis of the [PtCl6-nBrn]2- (n=0-6)

System. W Gerber, K R Koch, D van Niekerk and P-H van Wyk, Phys.Chem.Chem.Phys., 2015, 17, 5712- 5724

139. Isotope effects in 195

Pt NMR spectroscopy: Unique 35/37

Cl, and 16/18

O resolved ‘fingerprints’ for all [Pt(OH)6-

nCln]2-

(n = 0-5) anions in alkaline solutions: implications of the trans influence. L. Engelbrecht, P. Murray, and K. R. Koch* Inorg. Chem., 2015, 54, 2752−2764.

140. Room temperature photo-induced deposition of platinum mirrors and nano-layers from simple Pt(II) precursor

complexes in water–methanol solutions. Liang Xian, L. Engelbrecht, Shani Barkhuysen and K. R Koch*, RSC Adv.,

2016, 6,34014. 141. A DFT study to unravel the ligand exchange kinetics and thermodynamics of OsVIII oxo/hydroxido/aqua

complexes in aqueous matrices, Daniel M. E. van Niekerk, Wilhelmus J. Gerber and Klaus R. Koch Dalton Trans.,

2016, 45, 7028.

142. Intrinsic 35/37

Cl and 16/18

O isotope effects in high-field 195

Pt and 103

Rh NMR of purely inorganic Pt and Rh

complexes: unique spectroscopic fingerprints for unambiguous assignment of structure. Klaus R Koch* and Leon Engelbrecht, Invited Dalton Transactions (Perspective Article) (in review), 2016.

Manuscripts in preparation

143. Rare, Hypodentate Coordination of N,N-dialkyl-N’-naphthoyl-thiourea in the Unprecedented Formation of Mixed

Ligand [Pt(phen)(L- S)2] Complexes Stabilized by Intra/inter-molecular stacking Interactions Izak A. Kotzé,

Vincent J. Smith and Klaus R. Koch, Dalton Trans., (submitted), 2016. 144. Facile light-induced, reversible isomerization of cis-[Pd(L- S, O)2] (L = N, N-diethyl-N’-naphthoylthiourea)

complexes into trans-[Pd(L- S, O)2] and its unprecedented trans-[Pd(L- S, N)2] counterpart in acetonitrile., H.

Nkabyo and K R Koch*, Dalton Trans., 2016 (manuscript in final revision for submission).

145. “Speciation of [RhCln(H2O)6-n]3-n (n=3-6) aqua-chlorido complexes in hydrochloric acid by means of high-resolution 103

Rh NMR spectroscopy: A first direct species distribution diagram at high Rh(III) concentration” T. E.

Geswindt, W. J. Gerber and K. R Koch*, Anal. Chim. Acta, 2016/7. (Manuscript in prep for submission.)

146. Unambiguous speciation and full characterization of the entire series of trigonal-bipyramidal [Pt(Sn5ClnBr15-n)]3-

(n

= 0 – 15) complex anions by means of high-resolution 195

Pt NMR spectroscopy.” S. Barkhuysen and K. R Koch* Mag. Res. Chem., 2016/7, (manuscript in preparation).

CONFERENCE PRESENTATIONS: PLENARY, KEYNOTE AND INVITED LECTURES AND INVITED SEMINARS NATIONALLY AND INTERNATIONALLY, INCLUDING STUDENT

POSTERS. (Name of presenter underlined)

1. Poster: Klaus R Koch, “Unusually large 1J(

195Pt-

117Sn) coupling constants: A multinuclear NMR study of some

platinum(II) complexes containing the trichlorostannato moiety”, presented at the 27th SACI Convention, Pretoria, 28 July - 1 August, l980.

2. Contributed Lecture: Klaus R Koch and J Yates, “A 1H NMR study of the reaction of stannous chloride with

cis/trans dichlorobispyridinato-platinum(II) complexes in acetone solution: Rapid isomerisation of the cis complex” presented at Inorganic '81 Conference on Pure and Applied Co-ordination Chemistry, Rustenburg, Transvaal, July 6 - 9, 1981.

3. Contributed Lecture, Klaus R Koch, “The extraction and separation of platinum and palladium in the presence

of tin(II) chloride” presented at Inorganic '83: Inorganic Chemistry and Industry, Rustenburg, Transvaal, July 4 - 8, 1983.

16 4. Poster: Klaus R Koch, “The Distribution of Chloro(trichlorostannato)-rodium (I/III) Complexes between 4-

Methylpentan-2-one and dilute Hydrochloric Acid: A 119

Sn NMR Study” presented at the 2nd International Conference on the Chemistry of the Platinum Group Metals, Edinburgh, Scotland, July 1 - 6, 1984.

5. Contributed Lecture: Klaus R Koch, “The use of polyurethane foams in the preconcentration and analysis of the platinum group metals” presented at 2nd IUPAC International Symposium: Analytical Chemistry in the Exploration Mining and Processing of Materials. Pretoria, South Africa, April 15 - 19, 1985.

6. Contributed lecture: Klaus R Koch, “Polyurethane foams in selective separation and pre-concentration of the platinum group metals” presented at SAC86 incorporating 3rd BNASS organised by the Analytical Division of the Royal Society of Chemistry. University of Bristol, Bristol UK, July 20 - 26, 1986.

7. Poster: Klaus R. Koch and C Sacht, “Acyclic Multidentate Ligands: Synthesis and solution state NMR studies of some selected 'Podands'”, presented at SACI Jubilee Convention '75, Durban, 6 - 10, 1987.

8. Contributed lecture: Klaus R Koch M A B Pougnet and S de Villiers Increased Urinary Levels of Aluminium after consumption of tea: a cause for concern? presented at Inorganic '88, Gordons Bay, 6 - 9 April, 1988.

9. Poster: Klaus R Koch and I Nel “Novel phenylurethano terminated tri-, tetra-, and polyethylene glycol extractants: A model for metal complex extraction by polyurethane”, presented at Inorganic '88, Gordons Bay, 6 - 9 April, 1988

10. Poster: Klaus R Koch and C Sacht Novel Sulphur Podands with Dithiocarbamato Terminal Groups. presented at XXVI International Conference on Coordination Chemistry, Porto, Portugal, 28 August - 2 September 1988.

11. Poster: Klaus R Koch “Structural and Multinuclear NMR Studies at Thiosemicarbazido and N,N'-Dialkyl-N'-Benzoylthiourea complexes of Platinum(II). An examination of the question of cis/trans isomerism”, presented at XXVI International Conference on Coordination Chemistry, Porto, Portugal, 28 August- 2 Sept, 1988.

12. Contributed Lecture: Klaus R Koch, “Determination of small amounts of Aluminium by 27

Al NMR: A novel method for estimating levels of Al in tea” presented at 30th SACI National Convention, Johannesburg, 15 - 20 January 1989.

13. Best Poster Award: Klaus R Koch “Models for the sorption of Rh and Pt by Polyurethanes in the presence of

SnCl2: An NMR Speciation Study.” Presented at XXVII International Conference on Coordination Chemistry,

Gold Coast, Australia, 2 - 7 July, 1989. 14. Poster: Klaus R Koch, S J Archer and S Madelung The chemical and stereochemical activity of the lone pair in

tin(II) complexes. Presented at XXVII International Conference on Coordination Chemistry, Gold Coast,

Australia, 2 - 7 July 1989.

15. Contributed Lecture, Klaus R Koch and I Nel, “A 119

Sn NMR speciation study of the nature and distribution of trichlorostannato complexes of Rhodium and Platinum”, presented at Inorganic 90, Golden Gate, South Africa, 16 - 19 January 1990.

16. Poster Klaus R Koch and I Nel, “Novel Liquid Urethane Extraction Systems: Models for the Selective Extraction of Rhodium(trichlorostannato) Complex Anions by Solid Polyurethanes”, presented at XXVIII International Conference on Coordination Chemistry, August 13 - 18, 1990, Gera, East Germany.

17. Poster Klaus R Koch and C Sacht, “The Coordination Chemistry of the Podands 1,8-bis(quinolyloxy)-3,6-dioxaoctane and 1,8-bis(quinolyloxy)-3,6-dithiaoctane", presented at 6th International Symposium on Molecular Recognition and Inclusion, Berlin, West Germany, 10 - 15 September, 1990.

18. Keynote Lecture: Klaus R Koch, South African Chemical Institute 31st Convention, "High Resolution Multinuclear Magnetic Resonance Spectroscopy: Application in Speciation and Quantitative Analysis - Prospects and Limitations", 24 - 27 June 1991, Rhodes University, Grahamstown, RSA.

19. Poster: R Hunter, A Allie and Klaus R Koch, Synthetic Studies Towards a Novel Boron Containing Cyclophane. presented at SACI 31st Convention, Rhodes University, Grahamstown, 24 - 27 June, 1991.

20. Poster: An Assessment of the Distribution, Chemical Composition and Seasonal Variation of Potential Nutrients in Foam and Water Samples from Western Cape Rivers. S Churms and Klaus R Koch, presented at SACI 31st Convention, Rhodes University, Grahamstown, 24 -27 June, 1991.

21. Contributed Lecture: Klaus R Koch Determination of the Platinum Group Metals in strongly acid solution by means of Flow Injection Analysis. and D Auer, presented 3rd International Symposium: Analytical Chemistry in the Exploration, Mining and Processing of Materials, Sandton, South Africa, 2-7 August 1992.

22. Contributed lecture: Klaus R Koch “New N-alkyl and N,N-Dialkyl-N'-benzoylthiourea Chelating Ligands with

Metallomesogenic Properties: Deceptively Simple Hydrogen Bond Directed Selectivity?” and S Bourne, T Grimmbacher presented at Inorganic'92 National Conference of the South African Chemical Institute, 21-24 June 1992, Warmbaths, South Africa.

23. Poster: Klaus R Koch, S Madelung and M Caira “Nitrogen donor atom chelate complexes of bivalent tin halides

(Cl-, Br

-, I

-): the crystal and molecular structure of [Sn(1,10,-phenantholine)Br2] and [Sn(1,10,-

phenantholine)2]Br2 “ presented at 29th International Conference on Coordination Chemistry, Lausanne, Switzerland, July 19-24, 1992.

24. Contributed Lecture: Klaus R Koch, “Simultaneous Determination of the Platinum Group Metals in Strongly Acid Solution by Flow Injection Analysis”, and D Auer Winter Conference on Flow Injection Analysis, Florida Keys, United States of America January 3-6, 1993.

17 25. Contributed Lecture: Klaus R Koch and C Sacht, “Platinum Complexes of N,N-dialkyl-N'-acylthioureas: New

Mixed Ligand Diimine-N,N-dialkyl-N'acylthiourea Platinum(II) Complexes and their Non-Covalent Stacking Interactions with Pyrene” 5th International Conference on the Chemistry of Platinum Group Metals, St. Andrews, University of St. Andrews, Scotland, 11-16 July, 1993.

26. Water Soluble Hydroformylation Catalysts: Application to Long Chain 1-alkenes. Klaus R Koch and J du Toit, Catalysis and Catalytic Processing, 24-27 October 1993, Cape Town, South Africa.

27. Keynote Lecture: Klaus R Koch “A Treasure Trove of New Ligands for the Platinum Group Metals: Deceptively

Simple Coordination Chemistry of the N-acyl-N'-alkyl- and N-acyl-N'N'dialkylthioureas. From Potentially New Antitumor Drugs to Metallomesogens” 32nd Convention of the South African Chemical Institute, 30 January-3 February 1994, Halfway House, South Africa.

28. Session Lecture : “New Platinum Complexes as DNA Intercalators” C Sacht, Klaus R Koch and C Lawrence. 32nd Convention of the South African Chemical Institute, 30 January-3 February 1994, Halfway House, South Africa.

29. Session Lecture: Klaus R Koch: “New Ligands for the Platinum Group Metals: Deceptively Simple Coordination Chemistry of N-Acyl-N'-Alkyl and N-Acyl-N'N-Dialkylthioureas: From Mesogens to New Antitumor Drugs” C Sacht and T Grimmbacher. 30th International Congress on Coordination Chemistry, 24-29 July 1994, Kyoto,

Japan. 30. Poster: A Multinuclear NMR study of Platinum(II) Complexes of Substituted 4-Phenylthiosemicarbazides.

Klaus R Koch, M J Arendse and I R Green, Inorganic '95, University of Natal, Pietermaritzburg, South Africa,

22-25 January 1995. 31. Session Lecture: Klaus R Koch “A

1H and

195Pt NMR study of rapid protonation mediated interconversion

between mono and bidentate coordination of N-morpholine- and N-aza-18-crown-6-N'-naphthoylthioureas in platinum(II) complexes”, T Grimmbacher and C Sacht, Inorganic '95, University of Natal, Pietermaritzburg, South Africa ,22-25 January 1995.

32. Contributed Lecture: Klaus R Koch “Potential Platinum DNA-Metallointercalators: Synthesis, Characterization

and 1H NMR Studies on the Self-Association of [Pt(diimine)(N'N-dialkyl-N'-acylthioureato)

+PF6 Complexes in

Solution” C. Lawrence and C. Sacht, Inorganic '95, University of Natal, Pietermaritzburg, South Africa 22-25 January 1995.

33. Poster: Linked N,N-dialkyl-N'acylthioureas: Synthesis and complexation with divalent d6 Metal Ions. Klaus R

Koch and J D Miller, Inorganic '95, University of Natal, Pietermaritzburg, South Africa, 22-25 January 1995. 34. Session Lecture: Klaus R Koch “Determination of the Platinum Group Metals in Acid Medium by Flow Injection

using Multi-wavelength Photometric Detection: Is it at all feasible?" Klaus R Koch and D Auer, Analytika '94 University of Stellenbosch, Stellenbosch, 8-13 December 1994.

35. Keynote Lecture: Klaus R Koch “Protonation Mediated Mono v.s. Bidentate Co-ordination of Pt(II) by N-aycl-N'N'-dialkylthioureas: the Link between the Co-ordination of the N'-alkyl and N'N'-dialkyl-substituted Ligands". Klaus R Koch, Tarron Grimmbacher, and C Sacht, 15th Conference on Coordination Chemistry, 5-9 June 1995, Smolenice, Slovakia.

36. Invited Lecture: Klaus R Koch University of Leipzig, Institut für Anorganische Chemie, Leipzig Germany, 14 June 1995. "N-acyl-N'-alkylthioharnstoffe als vielseitige Bausteine neuer Liganden fur die Platin-Metalle".

37. Invited Lecture: Klaus R Koch Institut für Anorganische Chemie Technische Universität München, München Germany, 19 June 1995. "N-acyl-N'alkylthioureas as Versatile Building Blocks of New Ligands for the Platinum Group Metals: From Deceptively Simple Co-ordination Chemistry to New Applications".

38. Invited Lecture: Klaus R Koch Presented at the Department of Chemistry, University of Bayreuth, Bayreuth, Germany, 23 June 1995. "N-acyl-N-alkylthioharnstoffe: vielseitege Bausteine neuer Liganden fur die Platin-Metalle".

39. Poster: A 1H and

195Pt NMR study of the protonation mediated mono vs bidentate co-ordination of Pt(II)

by N-acyl-N',N'-dialkylthioureas. Klaus R Koch and Tarron Grimmbacher, 33rd Convention of the South African Chemical Institute, Cape Town, 29 January-2 February 1996.

40. Contributed lecture: Klaus R Koch A Mechanistic Investigation of Factors Influencing the Targeted Synthesis N',N'-dialkyl-N'-acylthiourea Ligands, Jörn D S Miller, and Roger Hunter, 33rd Convention of the South African Chemical Institute, Cape Town, 29 January-2 February 1996.

41. Poster: Oxidative Addition reactions of some Carbonylphosphine Rhodium(I)-Complexes with N,O and S-donor monocharged bidentate ligands. G Kemp, A Roodt, W Purcell and Klaus R Koch, 33rd Convention of the South African Chemical Institute, Cape Town, 29 January-2 February 1996.

42. A Multinuclear NMR Study of Platinum(II) Complexes of Ring Substituted 4-phenylthiosemicarbazides. Malcolm Arendse, Ivan R Green and Klaus R Koch, 33rd Convention of the South African Chemical Institute, Cape Town, 29 January-2 February 1996.

43. Invited Lecture: Klaus R Koch, New Insights into the Deceptively Simple Co-ordination Chemistry of N-acyl-N',N'-dialkylthioureas of Platinum(II). Presented at the 31st International Co-ordinaiton Chemistry Conference, Vancouver, Canada, 18-23 August 1996

18 44. Invited Lecture: Klaus R Koch “Novel mixed-ligand water soluble platinum(II) complexes and their

interaction with DNA”, Emory University, Atlanta, USA, 11-12 August 1996.

45. BEST POSTER AWARD:Synthesis and self-aggregation of a new class of mixed ligand [Pt(diimine)(N-benzoyl- N’,N’-di(2-hydroxyethyl)thiourea]

+Cl

- complexes in aqueous solution: an in vitro study of their binding to DNA”.

K R Koch, Yu-Shan Wu, P. Hüsler, and J McClure and L Marzilli, 4th International Symposium on Applied

Bioinrganic Chemistry Cape Town, 1 - 4 April 1997. 46. Invited Lecture Klaus R Koch “Neue Entwicklungen und Anwendungen von Acylthioharnstoff-Platin-Komplexen: Vom

ungewöhnlichen Aggregations-verhalten wasserlöslicher Pt-Komplexe zu metallomesogenen Komplexen” Institut für

Anorganische.u Analytische Chemie. Technical University of München, Germany, 24 February 1997. 47. Invited Lecture: Klaus R Koch: “New water-soluble mixed-ligand diimine N-acyl-N’,N’-dialkyl-thiourea-

platinum(II) complexes: Probes for - stacking interactions and new DNA intercalators” Fakultät für Chemie, Ruprecht-Karls-Universität, Heidelberg, Germany , 21 April 1997.

48. Invited Lecture “Zum Aufbau von Nanostrukturen unter Einzatz von Edelmetallkomplexen” Institut für Anorganische Chemie, Technische Universität Dresden, Germany. 7 May 1997.

49. Invited Lecture “Deceptively simple co-ordination chemistry of N-acylthioureas. Self-association of new water-

soluble mixed-ligand Pt(II) complexes: probes for - stacking interactions?” Institute of Inorganic Chemistry,

University of Fribourg, Switzerland. 14 May 1997.

50. Invited Lecture: Klaus R Koch “Deceptively simple co-ordination chemistry of N-acylthioureas.Self-

association of new water-soluble mixed-ligand Pt(II) complexes: probes for - stacking interactions?” Institut

für Anorganischer Chemie, R-W. Technische. Hochschule Aachen, Germany. 1 July 1997.

51. Keynote lectures Klaus R Koch Minisymposium: “Leipziger Treffen: Koordinationschemie” Universität

Leipzig, Germany. 20-21 May 1997 “Neues von N-acylthioharnstoffen aus der Südlichen Hemisphäre:Isomersation und metallomesogenes

Verhalten der [M(H2L)2Cl2] (M = Pt(II), Pd(II); X = Cl, Br, I)-Komplexe”. ”Aggregation zu Nanostrukturen und Intercalation von DNA der wasserlöslichen [Pt(diimine)(L-S,O)]

+

Komplexen” 52. Invited lecture: Klaus R Koch “Methods for the Selective Sorption and Pre-concentration of Traces of the

Platinum Metals From Real Process Effluents”, Klaus R Koch, Claire Lawrence, Darren Handforth, and J Miller, Integrated Environmental Management in South Africa CHEMSA’98, 9-11 February, East London, South

Africa, 1998. 53. Invited 1998 BARKER (Memorial) Lecture, RHODES UNIVERSITY: “Of Magnets, Molecules and Magnetic

Resonance Spectroscopy” in addition to a series of 5 research seminars to staff and students of the

Department of Chemistry, Rhodes University, Grahamstown South Africa, 3 - 7 August 1998. 54. “Self-assembly of new 2:2 and 3:3 platinum(II) metallocyclic complexes fo bipodal bis(thiourea) ligands” Klaus R

Koch, J Miller, S Bourne and A Coetzee, Presented at 33rd International Conferences of Coordination Chemistry, Florence, Italy, 30 August – 4 September 1998.

55. Contributed Lecture, Klaus R Koch “ A new class of water-soluble, mixed ligand platinum(II) complexes as

potential DNA intercalators: an in vitro study of their strong binding to DNA”, Klaus R Koch and Yu-shan Wu, Nucleic Acid Interactions with Metal Ions, Alghero, Sardinia, 5 – 9 1998.

56. Invited keynote lecture: Klaus R Koch. “The Platinum Metals Industry in South Africa: An Overview from an Academic’s Perspective - Opportunities and Problems”, Inorganic ‘99, University of Stellenbosch, South Africa, 17 - 20 January 1999.

57. Poster: Platinum(II) complexes of bipodal 3,3,3’,3’-Tetraallkyl-1,1’-acyl(aroyl)-bis(thiourea) Ligands: Crystal

structures of tris-[3,3,3’,3’-Tetraalkyl-1,1’-terephthaloyl-bis(thioureato-S,O)tri-platinum(II) and bis[3,3,3’,3’-

tetraalkyl-1,3-isophthaloyl-bis(thioureato-S,O)di-platinum(II) Klaus R. Koch, Jörn Miller and Anita Coetzee. at Inorganic ‘99, University of Stellenbosch, South Africa, 17 - 20 January 1999.

58. Poster: New platinum group metal complexes on N-acyl-N’,N’-dialkylthioureas: Reagents for the determination of these complexes by RP-HPLC? Klaus R Koch, Alpheus Mautjana, and Jörn Miller, at Inorganic ‘99, University

of Stellenbosch, South Africa,17 - 20 January 1999. 59. Poster: Speciation within a solid phase pre-concentration of Pd(II) with N-benzoyl-N’,N’-diethylthiourea on a

C-18 RP column. Klaus R Koch and Michael Schwarzer, Inorganic ‘99, University of Stellenbosch, South Africa,

17 - 20 January 1999.

Conference contributions lectures and outputs from 2000 onwards: Stellenbosch University

60. Lecture: “Methods for the pre-concentration and recovery of PGMs from process effluents” Intergrated

Environmental Management in South Africa CHEMSA’2000, 27-29 March, East London, South Africa, 2000. 61. Self-assembly of planar 2:2 and 3:3 metallamacrocyclic complexes of bipodal N,N,N’N’-tetraalkyl-1,1’-phenylene-

bis(thioureas) with d8 metal ions. Building blocks for 3-Dimensional Molecular Arrays. Klaus R Koch, Orren Hallale,

19 Susan Bourne, and Joern Miller. Poster at MACROCYCLES 2000, XXV International Symposium on

Macrocyclic Chemistry, St Andrews, Scotland 2 – 7 July 2000. 62. Invited keynote lecture: New Chemistry with Old Ligands: N-acyl(aroyl)-N'-alkylthioureas in Co-ordination,

Analytical and Process Chemistry of the Platinum Group Metals. Klaus R Koch 34th

International Co-ordinaiton Chemistry Conference, Edinburgh, Scotland, 9 –14 July 2000.

63. Potential anti-malarial properties of mixed ligand, water soluble platinum(II) complexes. Poster, Paul Swan, T

Egan and Klaus R Koch. 35th

National Convention of the South African Chemical Institute, SACI 2000, Potchefstroom University, Potchefstroom, RSA, 24-29 September, 2000

64. A multinuclear (13

C, 31

P and 195

Pt) NMR study of mixed ligand platinum complexes with new N,N-dialkyl-N’-

aroylthiourea ligands. Poster, Sibusiso Mtongana and Klaus R Koch, 35th

National Convention of the South African Chemical Institute, SACI 2000, 24-29 September, 2000, Potchefstroom University, Potchefstroom, RSA.

65. 21st Paul Daniel Hahn Memorial Lecture (Royal Society of Chemistry and Royal Society of South Africa):

“Driving into the Platinum Millenium five centuries later…will Chemistry be a passenger or a driver ? “ Klaus R Koch, University of Cape Town, 30 October 2000.

66. Invited Inorganic Chemistry Colloquia: University of Marburg 30 November 2000, University of Leiden, 11 December 2000, and Vrije Universiteit te Amsterdam, 12 December 2000: “New Chemistry with Old Ligands:

N-acyl(aroyl)-N'-alkylthioureas in Co-ordination, Analytical and Process Chemistry of the Platinum Group Metals

“ Klaus R Koch.

67. Lecture: A 195

Pt Nuclear Magnetic Resonance Speciation Study of Some Platinum(II/IV) Complexes with N-acyl(aroyl)-N'-alkyl and N-acyl(aroyl)-N'N’-dialkylthioureas. Klaus R Koch, A Westra and J Miller, Paper Colloquium Spectroscopicum Internationale XXXII, 8-13 July, 2001, Pretoria.

68. BEST POSTER AWARD. The structural elucidation of platinum(II) chelates of N-thiophosphorylated

thioamides and N,N’-thiophosphorylthiourea by multinuclear (1H,

13C,

31P and

195Pt) magnetic resonance

spectroscopy. * Sibusiso Mtongana, Vasiliy Brusko and Klaus R. Koch, Colloquium Spectroscopicum Internationale XXXII, 8-13 July, 2001, Pretoria.

69. Poster: PtX62-

Solvation: A high resolution 195

Pt NMR and UV-vis spectrophotometric investigation (X=Cl-, Br

-).

Klaus R Koch and * Arjan N Westra, Colloquium Spectroscopicum Internationale XXXII, 8-13 July, 2001, Pretoria

70. Poster: New platinum(II) chelates of N-thiophosphorylated thioamides and N,N’-thiophosphorylthioureas. Sibusiso Mtongana, Klaus R. Koch and Vasiliy Brusko, CATSA-SACI Inorganic 2001 Conference, 4 - 8 November 2001, Pilansberg, RSA.

71. Poster: Modelling Platinum Group Metal Complexes Solvated By Methanol, * A S Lopis, K R Koch, D Robinson, K J Naidoo, CATSA-SACI Inorganic 2001 Conference, 4 - 8 November 2001, Pilansberg, RSA

72. Poster: Molecular Modelling of Methanol Synthesis over Gold Catalysts, N S Phala, * G Klatt, K R Koch, E van Steen, J

C Q Fletcher, CATSA-SACI Inorganic 2001 Conference, 4 - 8 November 2001, Pilansberg, RSA. BEST

POSTER IN SECTION AWARD. 73. On the Nature and Speciation of Pt(II/IV) complexes of N-acyl-N’,N’-dialkylthioureas. Klaus R Koch*. Lecture

presented at 35th

International Conference on Coordination Chemistry, 21 - 26 July 2002, Heidelberg Germany 74. Poster: The Examination of Bulk Liquid-Membrane Transport and Extraction of Metal Ions by N,N-

disubstituted-N’-aroylthiureas ( Selective Silver Transport). M Mesfin Habtu, R Luckay and K R Koch at SACI

2002, 36th

South African Chemical Institute Convention, 1-5 July, Port Elizabeth. 75. Lecture “Probing Solvation Shells of PtX6

2- Anions: a High Resolution

195Pt,

23Na and

35Cl Nuclear Magnetic

Resonance Investigation (X=Cl-, Br

-)”. Klaus R. Koch and Arjan N. Westra. at “Analytika 2002”, 4 - 9 December,

University of Stellenbosch, South Africa, 2002. 76. Poster: Rapid major-component analysis, and potential authentication of “Extra-Virgin” Olive Oils using

Quantitative 13

C NMR. Klaus R Koch and Jean McKenzie, at “Analytika 2002”, 4-9 December, University of Stellenbosch, South Africa, 2002.

77. Invited Lecture On the Nature and Speciation of Pt(II/IV) complexes of N-acyl-N’,N’-dialkylthioureas. Klaus

R Koch. presented at 35th

International Conference on Coordination Chemistry, 21-26 July 2002, Heidelberg

Germany 78. Invited Lecture On the Nature and Speciation of Pt(II/IV) complexes extracted with N-acyl-N’,N’-

dialkylthioureas into non-aqueous Solvents: A multinuclear NMR study. Klaus R Koch, presented at the 8th

International Conference on the Chemistry of the Platinum Group Metals, 7–12 July 2002, Southampton, UK. 79. Poster Nickel, Palladium and Platinum complexes of Thiocarbamic Esters: A Systematic study. Gavin Blewett, M

Breedenkamp, H Ardendorf, Klaus R Koch. at SACI 2002, 36th

South African Chemical Institute convention, 1-5 July, Port Elizabeth. BEST POSTER AWARD

80. Poster: PROBING HYDRATION AND SOLVATION SHELLS OF PtCl42-

AND PtCl62-

ANIONS: A COMPUTATIONAL AND EXPERIMENTAL STUDY A. Westra, A. Lopis, D. Robinson, K. J. Naidoo, and K. R. Koch.

20 8th International Conference on the Chemistry of the Platinum Group Metals, 7–12 July 2002, Southampton UK. BEST POSTER AWARD.

81. A First Assessment of the potential of N,N-dialkyl-N’-acyl(aroyl)-thioureas for the Liquid-Liquid extraction

and Pre-concentration of Os(IV/III) from HCl Medium. R. Klopper and K R Koch, Poster at SACI 2002, 36th

South African Chemical Institute convention, 1-5 July, Port Elizabeth. 82. The Examination of Bulk Liquid-Membrane Transport and Extraction of Metal Ions by N,N-disubstituted-N’-

aroylthiureas ( Selective Silver Transport). M Mesfin Habtu, R Luckay and K R Koch. Poster at SACI 2002, 36th

South African Chemical Institute convention, 1-5 July, Port Elizabeth.

83. Rapid major-component analysis, and potential authentication of “Extra-Virgin” Olive Oils using Quantitative 13

C NMR. Klaus R Koch and Jean McKenzie, Poster at “Analytika 2002”, 4-9 December, University of Stellenbosch, South Africa, 2002.

84. Microwave-Assisted Dissolution of Platiniferous Ore Samples and the Determination of some of the Platinum Group Metals using ICP-MS. Eunice Matsau and Klaus R Koch. Poster at “Analytika 2002”, 4-9 December, University of Stellenbosch, South Africa, 2002.

85. “Probing Solvation Shells of PtX62-

Anions: a High Resolution 195

Pt, 23

Na and 35

Cl Nuclear Magnetic Resonance

Investigation (X=Cl-, Br

-)”. Klaus R. Koch and Arjan N. Westra. Lecture at “Analytika 2002”, 4-9 December,

University of Stellenbosch, South Africa, 2002. 86. “The Structural Elucidation of Pt(II) Chelates of N-diisopropoxy-thiophopshoryl-thioamide and N-diiisopropoxy-

thiophosphoryl-N’-phenylthiourea by means of Multinuclear NMR spectroscopy “. Sibusiso Mtongana and Klaus R Koch:

Lecture at Young Spectroscopist’s Symposium (SASS), 19th

September 2002, Pretoria. 87. Bulk Liquid Membrane Transport and Extraction of Metal Ions by N,N-di-substituted-N’-aroylthiourea Ligands,

Poster, 3rd

Prize Poster Winner, Dalton Discussion 5: Ligand Design for Functional Complexes, Noorwijkerhout, The Netherlands, 10-12 April 2003. R C Luckay, M Mesfin Habtu, and Klaus R Koch.

88. Invited Lecture: Tailoring N,N-dialkyl-N’-acyl-thioureas to yield ligands suitable for platinum group metal

separation and pre-concentration from acid aqueous process effluents: New hydrophilic Pt(II), Pd(II) and

Rh(III) complexes of N,N-dialkyl-N’- (2,2-dimethylpropyl)-thioureas and their separation by reversed-phase HPLC. Dalton Discussion 5: Ligand Design for Functional Complexes, Noorwijkerhout, The Netherlands, 10-12

April 2003, Klaus R Koch. 89. Poster: Ni, Pd, and Pt Complexes of Thiocarbamic Esters: A Systematic Investigation G. Blewett, M.

Bredenkamp and K.R. Koch. SACI: Inorganic 2003”, Pretoria 8 – 10 June, 2003 90. BEST Poster Award: A study of competitive bulk liquid membrane transport and extraction of metal ions by a

series of mono and di-substituted aroyl(acyl)- thiourea ligands. Michael Habtu R.C. Luckay and K. R. Koch. SACI: Inorganic 2003”, Pretoria 8 – 10 June, 2003.

91. Poster: First Osmium(III) Complex with (N,N-diethyl-N’-benzoylthiourea) : an Investigation of Complex

Formation and Potential Solvent Extraction of Os(IV/III) using N,N-dialkyl-N’-acyl(aroyl)thioureas. Reynhardt Klopper and Klaus R. Koch. SACI: Inorganic 2003”, Pretoria 8 – 10 June, 2003.

92. Poster: 3D PFG 1H/

13C/

195Pt correlation NMR: Assignment of configurational isomers of platinum complexes

of N,N-dialkyl-N’-acyl(aroyl)thioureas.What factors control the isomer distribution?. Sibusiso Mtongana Jean McKensie and Klaus R. Koch. SACI: Inorganic 2003”, Pretoria 8 – 10 June, 2003.

93. Oral Presentation: A cornucopia of co-ordination modes of N-alkyl-N’-aroyl/acyl-thioureas: Art in co-

ordination chemistry ? Klaus R Koch. SACI: Inorganic 2003”, Pretoria, 8 – 10 June, 2003. 94. Invited Lecture: “ A cornucopia of co-ordination modes of N-alkyl-N’-aroyl/acyl thioureas: Complexity in

simplicity of design” Klaus R Koch, 21st

European Crystallographic Meeting, Durban International Convention Centre, South Africa, August 2003.

95. Oral poster presentation: First-reported Pt(IV) complexes with S,O-coordinating monopodal and bipodal

thiourea ligands. A. N. Westra, K. R. Koch and C. Esterhuysen, 21st

European Crystallograhic Meeting, Durban International Convention Centre, South Africa, August, 2003

96. Poster: Probing the solvation/hydration spheres and ion-pair formation of anionic PtCl62-

complexes in water-

methanol/acetonitrile solutions using 195

Pt and 23

Na NMR. Arjan N Westra, David Robinson, Kevin J Naidoo, Anton Lopis and Klaus R Koch* Presented at SMASH 2003, 14-17 September 2003, Verona, Italy.

97. Invited lecture: ‘FT-NMR and precious metal chemistry: a thumbnail sketch of 26 years of FT-NMR in South

Africa’ Klaus R Koch, Bruker-user NMR Meeting, The Farm Inn, Pretoria 28-30 January 2004. 98. Invited lecture: ‘Multinuclear NMR in Speciation Studies of Platinum complexes of Chelating Acyl-thioureas’,

Klaus R Koch University of Natal, Varian NMR Meeting, Durban, South Africa, June 2004. 99. Session lecture: “New building blocks for metal-organic frameworks: Facile electrochemical synthesis of novel

Pt(IV) chloro-, bromo- and iodo- adducts of mononuclear, 2:2 and 3:3 metallamacrocyclic Pt(II) complexes derived from S,O-chelating thioureas.” Arjan Westra, Susan Bourne, Catharine Esterhuysen, and Klaus R Koch, 36th International Conference on Coordination Chemistry, Merida, Mexico, 18-23 July, 2004

21 100. Poster: “Potentially fluorescent ligands and Pt(II) and Pd(II) complexes based on the N,N-dialkyl-N’-

aroylthioureas motif” Klaus R. Koch and J. C. Bruce. 36th International Conference on Coordination Chemistry, Merida, Mexico, 18-23 July, 2004.

102. Poster: “Ion-pair formation between Na+ and PtCl6

2-complexes in water-methanol/acetonitrile: A

195Pt NMR and

computational study towards understanding the solvation/hydration spheres of PtCl62-

anions”. David Robinson, Arjan N Westra, Anton Lopis, Kevin J Naidoo and Klaus R Koch. 36th International Conference on Coordination Chemistry, Merida, Mexico, 18-23 July, 2004

105. BEST POSTER AWARD: “Photochemical Isomerism of Pt(II) complexes with N,N-dialkyl-N’-acyl/aroy)lthioureas.” Klaus R. Koch and D Hanekom.. 36th International Conference on Coordination

Chemistry, Merida, Mexico, 18-23 July, 2004. 106. Invited Lecture: “Coordination Chemistry of Precious Metals in the New South Africa: Teaching ‘old’

molecules new tricks” Klaus R Koch, NRF-Royal Society Chemistry Symposium, Sheraton Hotel, Pretoria,

South Africa, 22-25 August, 2004 107. Session lecture: “Preferential Solvation of PtX6

2- Anions (X = Cl, Br): a

195Pt nuclear magnetic resonance study”.

Arjan N Westra and Klaus R Koch, Cape Organometallic Symposium, Breakwater Lodge, Cape Town, 28 October, 2004.

108. Invited lecture: “Complexity in Simplicity – Acylthiourea Coordination Chemistry of some Platinum Group Metals in

the ‘New’ South Africa: Teaching ‘old’ molecules new tricks” Klaus R Koch, Cape Organometallic Symposium,

Breakwater Lodge, Cape Town, 28 October 2004. 109. Invited lecture: “Coordination Chemistry of Precious Metals in the New South Africa: Teaching ‘old’ molecules

new tricks” University of Leipzig, 15 December, 2004. 112. Invited Keynote lecture: “Complexity in Simplicity - Coordination Chemistry of the Platinum Group Metals in the

‘New’ South Africa: Teaching ‘old’ molecules new tricks” Klaus R Koch, Inorganic 2005. SACI conference” 10-13

April 2005, University of Pietermaritzburg, South Africa. 113. Annual J W Bayles Lecture: HOWARD COLLEGE CAMPUS, University of Kwazulau-Natal, Thursday 28 April

2005: Klaus R Koch "The Age of Molecules - Chemistry's Legacy: A tale of Magnets, Molecules and Magnetic

Resonance" 114. Poster: “Electronically Induced Configurational Isomers of Pt(II) Complexes of NN-dilakyl-N’-acylthioureas. S

Mtongana and Klaus R Koch. “Inorganic 2005. SACI conference” 10-13 April 2005, University of

Pietermarizburg, South Africa. 115. Oral Presentation: “Comparison of Various N-based Ion Exchange Materials of Recovery of Platinum Group

Metals from Process solutions and effluents” J Kramer, Nomasonto E. Dhladhla and Klaus R Koch. “Inorganic

2005. SACI conference” 10-13 April 2005, University of Pietermarizburg, South Africa. 116. Invited Seminar: “Deceptively Simple co-ordination Chemistry of N-alkyl-N’-aroyl/acyl thioureas and

related motifs: New Platinum Group Metal Complexes and their Structures and possible uses” Klaus R

Koch, Department of Chemistry, University Zululand, Kwazulu-Natal, 6-7 June, 2005. 117. Poster: Assignment of E,Z configurational isomers of Pt(II) complexes by means of triple resonance

1H/

13C/

195Pt

PFG correlation NMR spectroscopy. Small Molecule NMR Conference SAMSH 2005, 25-28 September, 2005 Verona, Italy. Sibusiso Mtongana, Dimitris Argyropoulos, Eberhard Hoffmann and Klaus R. Koch.

118. Poster: A 1H and

195Pt NMR study of the spontaneous vs photo-induced cis to trans isomerism of cis-[M(H2L-

S)2Cl2] and cis-[M(L1-S,O)2] complexes (M= Pt

II or Pd

II). Small Molecule NMR Conference SAMSH 2005,

25-28 September, 2005 Verona, Italy. Jean M. McKenzie, Yali Wang, Nocky M. Derix and Klaus R. Koch. 119. Oral Presentation: “A

195Pt NMR and computational Study of the Solvation/Hydration spheres of PtCl6

2- and PtBr6

2-

anions”. Arjan N. Westra , David J. Robinson , Anton S. Lopis, Kevin J. Naidoo and Klaus R Koch , International Solvent Extraction Conference, Beijing China, 2005

120. Workshop on bilateral research, University of Gent, Belgium, 11-14 September 2005: “Fundamental

questions concerning the quantification of PGMs in Lead by SAFT and LAICP-MS” Klaus R Koch 121. Oral Presentation: "An investigation of the synthesis of N,N-dialkyl-N'-aroylselenoureas and their metal

complexes" Jocelyn Bruce and Klaus R Koch. 3rd Cape Organometallic Symposium, Graduate School of

Business, Cape Town, 21 October 2005: BEST Student oral presentation award. 122. Poster: “PGM recovery from authentic process solutions: (poly)amine vs guanidinium functionalised anion exchangers”

,3rd Cape Organometallic Symposium, Graduate School of Business, Cape Town, 21 October 2005:

BEST Poster award

123. Poster: “Assignment of EZ configurational isomers of Pt(II) cpmplexes by means of triple resonance 1H/

13C/

195Pt

PFG NMR spectroscopy” Sibusiso Mtongana, and Klaus R Koch, 3rd Cape Organometallic Symposium, Graduate

School of Business, Cape Town, 21 October 2005. 124. Oral presentation: “Preferential extraction of Pt-halides: a solution and solid state

195Pt NMR study”, Jurjen

Kramer, Nomasontho Dhladlha and Klaus R Koch, Varian NMR User Meeting, University of Stellenbosch, 19-20 October 2005.

22 125. Oral presentation: “ A novel method for the assignment of 13C NMR Spectra of Vegetable Oils “, Liezel

Retief, Jean McKenzie and Klaus R Koch, Varian NMR User Meeting, University of Stellenbosch, 19-20

October 2005. 126. Invited Motivational Lecture: “Science, Technology and Research: Forgotten ‘Idols in the age of molecules.”

Klaus R Koch, Presented at Science Idols Analytical Chemistry Competition, MTN Science Centre Canal

Walk, Cape Town, 7 November 2005. 127. Invited lecture: “NMR at the edge:

195Pt NMR as a powerful tool to probe for speciation and solvation of [PtX6]

2-

anions (X=Cl-, Br

-) in solution?” Klaus R Koch Bruker NMR User Meeting, 11-15 July, 2005, Cayle Lodge,

Drakensberg, Kwazulu-Natal, South Africa. 129. Best Poster PRIZE: Vatta L and Klaus R Koch, "Magnetic nanoparticles for base and platinum group metal ion

extraction", American Association for the Advancement of Science, St Louis, Missouri, USA 16-20 February, 2006.

130. Poster: Magnetic nanoparticles for base metal and platinum group metal ion extraction. Laura L. Vatta†, Ron D.

Sanderson and Klaus R. Koch, 6th

Intern Confer. on Scientific and Clinical Applications of Magnetic Carriers, 17

th -20

th May, 2006, Krems, Austria.

131. Poster: Potential large-scale synthesis of magnetite nanoparticles and their use in solvent extraction and ion

exchange technology. Laura L. Vatta†, Ron D. Sanderson and Klaus R. Koch., 6th

Intern Confer. on Scientific

and Clinical Applications of Magnetic Carriers, 17th

-20th

May, 2006, Krems, Austria. 132. Popular Royal Society of South Africa Lecture: "MORE PRECIOUS THAN GOLD - PLATINUM AND ITS

COUSINS...FROM VALUELESS 'LITTLE SILVER' TO SOUGHT-AFTER HIGH-TECH 21ST CENTURY METAL" Klaus R Koch, SA Museum Cape Town, 19 April 2006.

133. Invited Merck Departmental Seminar, University of Cape Town: “Complexity in Simplicity: Teaching ‘old’

molecules new tricks in Platinum Coordination Chemistry” Klaus R Koch, 30 May 2006. 134. Poster: “PGM recovery from Authentic Process solutions: Polyamine versus Guanidinium Functionalized Anion

Exchangers”. J Kramer, N Dhladhla and Klaus R Koch, 37th

International Conference on Coordination

Chemistry, Cape Town, 13th

-18th

August, 2006. 135. Poster: “Assessing Silica-Based Polyamine containing Ion Exchangers on selective PGM recovery from Process

Solutions” Nomasontho E Dhladhla, J Kramer and Klaus R Koch, 37th

International Conference on Coordination

Chemistry, Cape Town, 13th

-18th

August, 2006.

136. BEST POSTER AWARD in 37th

ICCC section on precious metals: “A DFT/TDDFT and NMR Spectroscopic study of the cis-trans Photochemical Isomerization of the Pd(II) and Pt(II) complexes of chelating

Acylthioureas”. Marga R. Burger, Jean M. McKenzie, Jan Dillen and Klaus R. Koch, 37th

International

Conference on Coordination Chemistry, Cape Town, 13th

-18th

August, 2006. 137. Poster: “ASSIGNMENT OF E,Z CONFIGURATIONAL ISOMERS OF PT(II) CHELATES OF UNSYMMETRICAL

N-ALKYL-N-ARYL-N’-ACYLTHIOUREAS: REMOTE ELECTRONIC SUBSTITUENT AND SOLVENT EFFECTS”

Sibusiso Mtongana, Marga Burger and Klaus R. Koch, 37th

International Conference on Coordination Chemistry,

Cape Town, 13th

-18th

August, 2006.

138. Poster:” METATHESIS OF BIS-CHELATED [PdII

(L-S,O)2] COMPLEXES IN SOLUTION”, Lynndal van der

Molen, Jean M. McKenzie and Klaus R. Koch, 37th

International Conference on Coordination Chemistry, Cape

Town, 13th

-18th

August, 2006. 139. Poster: “Magnetic nanoparticles for base metal and platinum group metal ion extraction”, Laura L. Vatta, Ron

D. Sanderson and Klaus R. Koch, 37th

International Conference on Coordination Chemistry, Cape Town, 13th

-

18th

August, 2006.

140. Poster: “195

Pt NMR and advanced computational methods as tools toward the understanding of speciation of

[PtX6]2-

(X= Cl- , Br

- and OH

-) anions in solution” M R Burger, J Kramer and Klaus R Koch, 37

th International

Conference on Coordination Chemistry, Cape Town, 13th

-18th

August, 2006. 141. Poster: “A Pandora’s Box of chelating ligands based on S,O- and O,O’-donor atoms sets - some aspects of their

coordination chemistry to Ni(II), Cu(II), Pd(II) and Pt(II)”, Gavin Blewett, M.W. Bredenkamp, Klaus R. Koch,

37th

International Conference on Coordination Chemistry, Cape Town, 13th

-18th

August, 2006. 142. Session Lecture: “metal complexes of N,N-dialkyl-N’-aroylthiou(seleno)ureas as single source precursors for

the synthesis of quantum dots” Jocelyn Bruce, N Revaprasada, Klaus R Koch, 37th

International Conference on

Coordination Chemistry, Cape Town, 13th

-18th

August, 2006. 143. Session Lecture: “A

195Pt NMR Study on Speciation and Preferential Extraction of Pt(IV0 halides” Jurjen

Kramer, M R Burger and Klaus R Koch 37th

International Conference on Coordination Chemistry, Cape Town,

13th

-18th

August, 2006. 144. Invited Keynote lecture to Platinum Centenary: “A Short Excursion into the history of Platinum and its cousin

elements: The role of ‘Muriate of Tin’ in the chemistry and discovery of Platinum and Palladium and the roots of modern heterogeneous ‘catalysis’.” Klaus R Koch, Presented on 10 November 2006, on the occasion of the

23 Centenary Celebration of the Discovery of Platinum in South Africa, University of the Witwatersrand, Johannesburg.

145. Invited talk Departmental Seminar: “More precious than gold….platinum and its cousins…from valueless “little

silver” to sought–after ‘high-tech’ 21st century element” Klaus R Koch, Department of Chemistry, University of Witwatersrand, 10 November 2006, Johannesburg.

146. Invited lecture: 25-27 January, 2007. Guest of Prof. Dr. Manfred Scheer, Institute of Inorganic Chemistry,

University of Regensburg, Germany. “195

Pt NMR and computational chemistry: Tools for understanding the deceptively simple separation and

solution chemistry of [PtX6]2-

anions” Klaus R Koch 147. Invited lecture: 31 January, 2007. Host Prof. Dr. E. Hey-Hawkins, Department of Chemistry and Mineralogy,

University of Leipzig, Germany. “Teaching complexes of ‘old’ acyl-thioureas and related molecules new tricks: Complexity in simplicity” Klaus R

Koch 148. Invited DAAD symposium “Focus on South Africa: Developing research links”, 1 February 2007. University of

Leipzig, Germany. Klaus R Koch: “South Africa: A world in one country…opportunities and problems”

149. Invited lecture: and visit to Ruhr University of Bochum 8-11 February 2007, Department of Inorganic

Chemistry. Host Prof. Dr. Nils Metzler-Nolte. Klaus R Koch “Water-soluble mixed ligand PtII complexes derived from N’-acyl-N,N-dialkylthioureas : DNA

intercalation and a new class of anti-malarial agents ?” 150. Invited Lecture : Institute of Inorganic Chemistry as guest of Prof Rudi van Eldik, Friedrich-Alexander

University Erlangen-Nürenberg, Germany, 7 May 2007:

“Experimental and computational 195

Pt NMR towards understanding the chemistry of [PtX6]2-

anions” Klaus R Koch 151. Invited Lecture: Institute of Inorganic Chemistry, Technical University of Berlin, Germany as guest of Professor

“Teaching ‘old’ acyl-thioureas and related molecules new tricks:

Complexity in simplicity” 2007.

152. Invited Keynote Lecture: “Experimental and computational 195

Pt NMR towards understanding the deceptively

simple separation and solution chemistry of [PtX6]2-

anions.” Klaus R Koch, at “Inorganic 007” Conference of the South African Chemical Institute, 8-12 July, 2007. Club Mykonos, West Coast, South Africa.

153. Poster contribution: “Synthesis of modified magnetic nano-particles: Possible use in precious metal anion

extraction” Eugene M. Lakay and Klaus R Koch, at “ Inorganic 007” Conference of the South African Chemical Institute, 8-12 July, 2007. Club Mykonos, West Coast, South Africa.

154. Best Poster Prize awarded (3rd

place): “The platinum(II) tetra-aqua complex: a 195

Pt and UV-vis spectroscopy study of this versatile starting compound” Pieter Murray, Jurjen Kramer and Klaus R Koch at “ Inorganic 007” Conference of the South African Chemical Institute, 8-12 July, 2007. Club Mykonos, West Coast, South Africa.

155. Poster contribution: “Crystal engineering of metal-coordinated acylthiourea derivatives” Nikoletta B Bathori,

Susan A Bourne, Khethiwe Cele and Klaus R Koch, at “ Inorganic 007” Conference of the South African Chemical Institute, 8-12 July, 2007. Club Mykonos, West Coast, South Africa.

156. Lecture: “What’s in the chemical shift of a 195

Pt nucleus? Experimental and Calculated NMR Chemical Shifts of complex anions of Pt(IV).” Klaus R Koch, Marga Burger and Jurjen Kramer, Carman National Physical Chemistry Symposium 2007, 23-27 September 2007, Cape Town.

157. Poster contribution: “Sqeezing platinum(IV) chloro-complexes to elucidate 195

Pt Chemical Shifts…first high

pressure 195

Pt NMR confirms DFT calculation” Marga Burger, Willem Gerber, Achim Zahl, R van Eldik and Klaus R Koch, Carman National Physical Chemistry Symposium 2007, 23-27 September 2007, Cape Town.

158. Departmental Seminar, University of Lyon as part of CNRS /NRF bilateral exchange, France 15 June 2008: “Experimental

195Pt NMR in understanding the solution chemistry of Aquated and/or hydrolysed species of

[PtX6]2-

(X=Cl Br) anions: Chemical Shift Trend and Isotopologue fingerprinting for unambiguous assignment. Klaus R Koch.

159. Invited Lecture: Klaus R Koch “Isotopologue and Isotopomer 195

Pt NMR of simple Pt(IV) complexes: A

powerful tool for unambiguous identification of all aquated and/or hydrolysed species of [PtCl6]2-

in solution” ..

At Dalton Discussion Group Meeting: Inorganic Reaction Mechanisms Coordination Chemistry, 18th

-20th

June 2008, University of Edinburgh, UK.

160. Lecture: “Chemical shift and isotopologue analysis with 195

Pt NMR: a powerful tool for the identification of all

aquated and/or hydrolysed species of [PtCl6]2-

, Klaus R Koch, J. Kramer, P Murray and W. Gerber. Presented at 38

th International Conference on Coordination Chemistry, Jerusalem, Israel, July 20-25, 2008.

161. Poster A high resolution NMR study of the self- and hetero-association of [Pt(1,10-phenanthroline)(N-

pyrrolidyl-N-(2,2-dimethylpropanoyl)thiourea)]+ and fluoranthene in solution. Izak A. Kotze, Wilhelmus J.

Gerber, Jean M. Mckenzie and Klaus R. Koch. Cape Organometallic Symposium (COS) 24th

October 2008, Cape

Town and SACI National Convention 30 Nov. -5th

Dec. 2008, Stellenbosch.

24

162. Poster: Oxidation of [PtCl4]2-

and the resulting species assignment. Pieter Murray, Wilhelmus J. Gerber and Klaus R. Koch. 38th ICCC in Jerusalem Israel, 20-25 July 2008.

163. Poster: A 195

Pt NMR spectroscopy study of the oxidation of [PtCl4]2-

and [Pt(H2O)4]2+

and the resulting species distribution. Pieter Murray, Jurjen Kramer, and Klaus R Koch, 38th ICCC in Jerusalem Israel, 20-25 July 2008.

164. Poster: “31

P NMR Spectroscopy of the Minor Components Present in South African Vegetable Oils” Liezel

Retief, Jean M. McKenzie and Klaus R.Koch. The 9th

International Conference on the Applications of Magnetic

Resonance in Food Science Sturlugata 8, 101 Reykjavik, Iceland. 15th

– 17th

September 2008. 165. Lecture: ” Identification and Quantification of Major Components in Selected South African produced

Vegetable Oils by 13

C NMR Spectroscopy. Liezel Retief, Jean M. McKenzie and Klaus R. Koch. The 9th

International Conference on the Applications of Magnetic Resonance in Food Science Sturlugata 8, 101

Reykjavik, Iceland. 15th

– 17th

September 2008. 166. Poster: “Intermolecular interaction motifs in organic ammonium carboxylate salts” James A. Odendal, Jocelyn

C. Bruce, Klaus R. Koch and Delia A. Haynes, 19th International Conference on the Chemistry of Organic Solid State, ICCOSS XIX, Genova, Italy, 14-16 June 2009.

167. Poster: A.Rodenstein, R. Kirmse (Leipzig University, Institute of Inorganic Chemistry) and K. R. Koch, Department

of Chemistry & Polymer Science, Stellenbosch University, ISMSC 2009, IV joint International Symposium on Macrocyclic & Supramolecular Chemistry, 21 - 25 June 2009, Maastricht Netherlands. ” BIPODAL

ACYLCHALCOGENOUREAS AND THEIR NiII

AND CuII

2:2 METALLAMACROCYCLIC COMPLEXES AS

SECONDARY BUILDING UNITS FOR MOLECULAR NETWORKS” 168. Invited lecture: Klaus R Koch, 19 June 2009, Department of Chemistry, University of Munster, Germany:

“What’s in the 195

Pt chemical shift of ‘simple’ platinum complexes? Unique ‘fingerprinting’ of Pt(IV) using isotope induced shifts at high resolution

195Pt NMR”

169. Expert Teaching Seminar to International MSc Graduate school of chemistry, Muenster University. Klaus

R Koch, 18 June 2009 : ” An Overview of the History, Importance, Process and Production Chemistry of Platinum Group Metals”

170. Poster: “ Hydrogen bonding motifs in ammonium carboxylate salts”, James A. Odendal, Delia A. Haynes and

Klaus R. Koch, XII International Seminar on Inclusion Compounds 12th

ISIC, 4-9th

April 2009, Stellenbosch,

South Africa. 171. Lecture: “What’s in the

195Pt chemical shift of simple platinum complexes?” K R Koch at Indaba-6, 30 Aug –

4 Sept 2009, Kruger National Park, South Africa 172. Invited Keynote lecture: Klaus R Koch, “Unique ‘fingerprinting’ of Pt(IV) using isotope induced shifts at high

resolution 195

Pt NMR“,at Inorganic-2009 SACI Conference, University of the Free State, Bloemfontein, South Africa 13-17 September, 2009.

173. Oral presentation: “Intermolecular self-assembly of [PtII

(phen)(L-S,O)]+ through π-cation interactions, studied by

high resolution 1H NMR and DOS.Y Spectroscopy”. Wilhelmus J. Gerber, Izak A. Kotze and Klaus R. Koch, at

Inorganic-2009 SACI Conference, University of the Free State, Bloemfontein, South Africa 13-17 September, 2009

174. Best Poster Prize: “Speciation and characterization of [PtCl6-nBrn]2-

(n = 0 – 6 ) complex anions utilizing RP-IP-

HPLC”. Pieter-Hugo van Wyk, W.J. Gerber and K. R. Koch. Inorganic-2009 SACI Conference, University of

the Free State, Bloemfontein, South Africa 13-17 September, 2009.

175. Best Poster Prize: “THE UNEXPECTED DIMERIZATION REACTION BETWEEN PEROSMATE ([OsO4(OH)2]2-

) AND

OSMATE ([OsO2(OH)4]2-

)” Theodor E. Geswindt, Wilhelmus J. Gerber, Hans E. Rohwer and Klaus R. Koch, Inorganic-2009 SACI Conference, University of the Free State, Bloemfontein, South Africa 13-17 September, 2009.

176. Best Poster Prize: “Superparamagnetic iron oxide based nano-particles for the separation and recovery of

gold from aqueous chloride rich solutions” Eugene Lakay and Klaus R Koch, Inorganic-2009 SACI Conference,

University of the Free State, Bloemfontein, South Africa 13-17 September, 2009. 177. Poster: “[PtCl4]

2- oxidation: complicated by Pt(II) catalysis?” Pieter Murray, W.J. Gerber and K. R. Koch,

Inorganic-2009 SACI Conference, University of the Free State, Bloemfontein, South Africa 13-17 September, 2009.

178. Poster: “High resolution 195

Pt and 119

Sn NMR characterization of the series of complex [Pt(SnX3)nX4-n]2-

(X=

Cl-, Br-) and [Pt(SnX3)5]3-

anions” Shani Barkhuysen, W.J. Gerber and K. R. Koch, Inorganic-2009 SACI Conference, University of the Free State, Bloemfontein, South Africa 13-17 September, 2009.

179. Poster: “Self-association of [PtII

1,10-Phenanthroline(N-pyrrolidyl-N-(2,2-dimethyl-propanoyl)thiourea)]+ and non-

covalent outer-sphere complex formation with fluoranthene through π-cation interactions: A high resolution 1H and DOSY NMR study” Izak A. Kotzé, Wilhelmus J. Gerber, Jean M. Mckenzie and Klaus R. Koch, Inorganic-2009 SACI Conference, University of the Free State, Bloemfontein, South Africa 13-17 September, 2009.

25 180. Invited Lecture: Klaus R Koch Joint EUROMAR 2010 and 17th ISMAR Conference: Worldwide Magnetic

Res Conference, 4-9 July 2010, Florence Italy “Isotope effects on 195

Pt chemical shifts in High-resolution

NMR: A for the [PtX6-n(H2O)n]n-2

(X = 35/37

Cl or 79/81

Br, n = 0-5) and related complexes in aqueous solution.” 181. Keynote Lecture, Klaus R Koch 39

th International Conference of Coordination Chemistry (39

th ICCC),

Adelaide Australia, 25-30 July 2010: “What’s in a chemical shift? High Resolution 195

Pt NMR as a tool in

understanding the deceptively simple Pt(II/IV) chemistry in process solutions relevant to PGM separation and refining”

182. Oral presentation: Simultaneous separation, quantification and thermodynamic study of the [PtCl4-nBrn]2-(n =

0-4) and [PtCl6-nBrn]2- (n = 0-6) complex anions by means of reversed phase ion-pair HPLC coupled to UV-VIS or ICP-OES detection” Pieter Hugo van Wyk, W Gerber and Klaus R Koch. ANALITIKA 2010 Conference, 5-9

December 2010, Stellenbosch University, South Africa. 183. Keynote Lecture: Klaus R Koch “What’s in a chemical shift? High Resolution 195Pt NMR in understanding the

deceptively simple Pt(II/IV) chemistry in process solutions relevant to PGM separation and refining”,.

ANALITIKA 2010 Conference, 5-9 December 2010, Stellenbosch University, South Africa. 184. Poster: “High resolution

195Pt and

119Sn NMR characterization of the series of complex [Pt(SnX3)nX4-n]

2- (X=

Cl-, Br-) and [Pt(SnX3)5]3-

anions” Shani Barkhuysen, W.J. Gerber and K. R. Koch ANALITIKA 2010 Conference, 5-9 December 2010, Stellenbosch University, South Africa.

185. BEST POSTER PRIZE: “A speciation and thermodynamic study of the [PtCl4-nBrn]2-

( n = 0 – 4 ) and [PtCl4-

nBrn]2-

( n = 0 – 4 ) complex anions using reversed phase ion-pair HPLC coupled to UV-VIS or ICP-OES detection” Pieter-Hugo van Wyk, W Gerber and Klaus R Koch. 40th SACI National Convention incorporating INORGANIC 2011 held at Wits University Johannesburg, 16-21 January 2011

186. Poster: “ High-resolution 195

Pt and 119

Sn NMR characterization of mixed halide platinum(II)-tin(II) complexes” Shani Barkhuysen and Klaus R Koch. 40th SACI National Convention incorporating INORGANIC 2011 held at Wits University Johannesburg, 16-21 January 2011

187. Poster: ‘Intermolecular self-assembly of [PtII

(phen)(L1-S,O)]

+ through cation-π interactions, studied by high

resolution 1H NMR and DOSY Spectroscopy” Izak A. Kotze, W Gerber and Klaus R Koch. SACI 2011 188. BEST POTER PRIZE: “Measurement of bond displacement by

195Pt Solid-State NMR??” James A. Odendal

and Klaus R Koch. 40th SACI National Convention incorporating INORGANIC 2011 held at Wits University Johannesburg, 16-21 January 2011

189. Poster: “Chemical modification of poly(styrene-co-maleic anhydride) with N-alkyl amines for use in precious

metal anion extraction.” Eugene M. Lakay, B Klumpermann and Klaus R Koch. 40th SACI National Convention incorporating INORGANIC 2011 held at Wits University Johannesburg, 16-21 January 2011.

190. Poster: “Reduction of cis-[OsVIII

O4(OH)2]2-

in basic media: Formation of a new high oxidation state osmium species?” Theodore E. Geswindt, W Gerber, H Rohwer and Klaus R Koch40th SACI National Convention

incorporating INORGANIC 2011 held at Wits University, Johannesburg, 16-21 January 2011. 191. Keynote Lecture (invited) Klaus R Koch “Self-association and -cation interactions of mixed ligand, water-

soluble Pt(II) cationic complexes: From NMR studies to potential anti-plasmodial complexes, DNA-intercalators and ‘metallo-gels’,. 40th SACI National Convention incorporating INORGANIC 2011 held at Wits University,

Johannesburg, 16-21 January 2011. 192. Visit at Heraeus GmbH in Hanau, Germany Invited Lecture, Klaus R Koch 4-5 May 2011: “

103Rh NMR in Rh(III)

Chemistry: Isotope effects and toward an accurate speciation distribution diagram in HCl” . 193. Invited Departmental Research Seminar Dortmund University, Germany, 11 May 2011, Klaus R Koch. ” ‘Old’

but important chemistry through new eyes: High Resolution 195

Pt NMR and 103

Rh of the deceptively simple

chemistry of platinum and rhodium as relevant to the refining industry”. 194. Invited Research Seminars, Klaus R Koch. Catholic University of Louvain, in Louvain-la-Neuve, Belgium from

15-20 May 2011. a. “High Resolution

195Pt NMR and

103Rh of the deceptively simple chemistry of platinum and rhodium as

relevant to the refining industry” on 17/5/2011 b. “Self-association and p-cation interactions of mixed ligand, water-soluble Pt(II) cationic complexes: From

NMR studies to potential anti-plasmodial complexes, DNA-intercalators and ‘metallo-gels”, on 19/5/2011. 195. Research visit and departmental research seminar Durham University from 21 – 27 May 2011: Klaus R Koch

” ‘Old’ but important chemistry through new eyes: High Resolution 195

Pt NMR and 103

Rh of the deceptively simple chemistry of platinum and rhodium as relevant to the refining industry”.

196. Poster: Klaus R Koch: “35

Cl/37

Cl isotope effects in 195

Pt and 103

Rh NMR: a fundamentally new tool for unambiguous

speciation of the deceptively simple PtIV

and RhIII

complex anions, in chloride-rich process solutions.” “Euromar 2011, Magnetic Resonance Conference” held in Frankfurt, Germany from 21- 25 August 2011.

197. Poster: Izak A. Kotzé, W J. Gerber, & Klaus R Koch: “Intermolecular self-assembly of [PtII

(phen)(L-S,O)]+

through cation-π interactions, studied by high resolution 1H NMR and DOSY Spectroscopy”. “Euromar 2011,

Magnetic Resonance Conference” held in Frankfurt, Germany from 21- 25 August 2011.

26 198. Invited Plenary: Klaus R Koch “Deceptively simple, rich Platinum

II/IV and Rhodium

III chemistry viewed through new

eyes: What secrets can the 195

Pt/103

Rh nuclei reveal about their molecular disguise in the solution and solid- state?” TWENTY FIRST SLOVENIAN-CROATIAN CRYSTALLOGRAPHIC MEETING 14 - 17 June, 2012 in Pokljuka near Bled, Slovenia

199. Invited Departmental Seminar: Klaus R Koch “Relevant ‘old’ chemistry through new eyes: What can high-

resolution 195

Pt NMR and separation science tell us about the deceptively-simple chemistry of platinum and its complexes in solution?” 24 the June 2012, Technical University of Vienna, Vienna.

200. Contributed Lecture: P-H van Wyk, Pieter-Hugo van Wyk, Wilhelmus J. Gerber, Klaus R. Koch “Chemical

speciation of mixed halide Platinum(II/IV) complex anions by ion-pairing RP-HPLC coupled to ICP-MS/OES: Toward Determination of metal to halide ratios”. 12th International Symposium on Hyphenated Techniques in

Chromatography and Hyphenated Chromatographic Analyzers, HTC-12 Bruges (Belgium), Feb 1-3, 2012 201. Invited lecture: Klaus R Koch. “

35/37Cl and

16/18O isotope resolved

195Pt and

103Rh NMR as unique

fingerprints of PtIV

and RhIII

complex anions” 40th International Conference on Coordination Chemistry (ICCC40), Valencia, Spain, 9–13 September 2012.

202. Invited Keynote: Klaus R Koch. “Platinum and rhodium chemistry viewed through new eyes: What new secrets

can 195

Pt and 103

Rh NMR spectroscopy reveal about speciation in as relevant to refining solutions?” SIAMM Platinum Conference: ‘A Catalyst for Change’ Sun City, South Africa,”18–21 Sept, 2012.

203. Invited Keynote: Klaus R Koch. “What’s in a NMR chemical shift of the 195

Pt and 103

Rh nuclei is deceptively simple Pt(IV) and Rh(III) complexes relevant to the refining industry? From unique isotope fingerprints to chemical speciation distribution diagrams” 16th SACI INORG 2013, 30 June-4 July 2013. Univ. KZN Durban, S Africa.

204. Poster: Leon Engelbrecht and Klaus R. Koch, “35/37

Cl and 16/18

O Isotope effects in 195

Pt NMR Spectra of Octahedral Pt(IV) hydroxide/chlorido-complexes in water: Isotopomers and the trans Influence. “ 16th SACI INORG2013, incorporating the CARMEN Physical Chemistry Conference. 30 June-4 July 2013, Univ. KZN Durban, S Africa.

205. Poster: Ishaaq Haje, and Klaus Koch. “Speciation Studies of Potassium Penta-chloronitrosyl-ruthenate & Potassium Penta-bromonitrosyl-ruthenate using Online RP-HPLC & ICP Techniques.” 16th SACI INORG2013, incorporating the CARMEN Physical Chemistry Conference. 30 June-4 July 2013, Univ. KZN Durban, S Africa

206. Poster: Henry A. Nkabyo and K. R. Koch. “Photo-isomerization of Pt(II) and Pd(II) acyl(aroyl)thioureas studied using reversed-phase HPLC.” 16th SACI INORG2013 , incorporating the CARMEN Physical Chemistry Conference. 30 June- 4 July 2013, Univ. KZN Durban, S Africa.

207. Keynote lecture: 2014 ANLYTIKA 2014: Klaus R Koch Methods of Chemical Speciation of Platinum Group

Metal Complexes in the context of the Refining Process Solutions: From multinuclear NMR spectroscopy to HPLC-ICP-OES and UHPLC-ESI-Q-TOF-Mass Spectrometry, Parys, South Africa 7-10 September 2014.

208. Best Poster award: Shani Barkhuysen and K R Koch “Speciation of stannous chloride complexes of

rhodium(I/III) with high-resolution 119

Sn NMR spectroscopy” Analitika 2014, Parys, South Africa 7-10 September 2014

209. Poster: Leon Engelbrecht and K R Koch “Isotope Effects in 195

Pt NMR for Determination of Platinum Complexes in Solution” Analitika 2014, Parys, South Africa 7-10 September 2014

210. Invited Plenary Lecture: 1st Tunisian Coordination Chemistry Conference, 8-11May 2015. Klaus R Koch

What’s in the 195

Pt and 103

Rh NMR Chemical Shift of deceptively ‘simple’ complexes of such precious metals? 211. Invited Seminar: Klaus R Koch, Dept. of Chemistry and Geology, University of Cagliari, Sardinia, 14 May

2015. 212. Contributed Lecture: Klaus R Koch at “INDABA 8, Serendipity vs Prediction” 16-21 August 2015, Kruger

Park South Africa. 213. Contributed lecture “Multinuclear (

195Pt,

119Sn and

103Rh) NMR at high field in purely inorganic systems:

speciation, isotope effects, solvation and diffusion of PGM complexes” Bruker User Meeting, 29 Jan 2016 in Cape Town

214. Invited Lecture: Klaus R Koch and Liang Xian, L Engelbrecht and S Barkhuysen, “Photoinduced deposition of

platinum mirrors from simple Pt(II) precursor complexes in aqueous solutions at room temperature” at 42nd

International Coordination Chemistry Conference (ICCC) in Brest France from 3-9 July 2016

215. Invited Keynote Lecture at “Multiscale Modelling of Materials and Molecules 2016” Conference

organized by Prof Kersti Hermansson (Uppsla University), sponsored by an e-science collaboration eSSENCE consortium at the Ångstrom Laboratory of Uppsala University in Sweden, 6-9 June 2016.

216. Poster: Leon Engelbrecht Klaus R Koch and Aatto Lanksonen, “Molecular Dynamics and 195

Pt NMR Study of the Solvation of simple Platinum Complexes in Water and Water-Miscible Solvent Mixtures” Presented at Multiscale Modelling of Materials and Molecules 2016: Ångstrom Laboratory of Uppsala University in Sweden, 6-9 June

2016. 217. Poster: Henry Nkabyo and K R Koch “Light-induced cis-[Pd(L-S,O)2] to trans-[Pd(L-S,O)2] isomerization:

Isolation of a novel trans-[Pd(L-S,N)2] complex, only with N,N-diethyl-N’’-naphthoylthiourea” at 42nd

International Coordination Chemistry Conference (ICCC) in Brest France from 3-9 July 2016.