2004 Germanium

GermaniumI 4700 The Hydrothermal Synthesis and Crystal Structure of (H2O)[Ge5O10] and

[(CH3)4N][Ge10O20OH], Two Novel Porous Germanates. — Two novel three-di-mensional porous germanates are synthesized hydrothermally and their structures are determined by single crystal XRD. (II) crystallizes in the monoclinic space group C2/m with Z = 4 and (III) in the tetragonal space group I4/m with Z = 2. The framework of (II) exhibits a new type of three-membered rings, which are built from two octahe-dral GeO6 and one tetrahedral GeO4 unit. In compound (III), OH- anions are located in the center of double four-membered rings. — (XU, Y.; FAN, W.; CHINO, N.; UEHARA, K.; HIKICHI, S.; MIZUNO, N.; OGURA, M.; OKUBO*, T.; Chem. Lett. 33 (2004) 1, 74-75; Dep. Chem. Syst. Eng., Grad. Sch. Eng., Univ. Tokyo, Bunkyo, Tokyo 113, Japan; Eng.) — W. Pewestorf

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