2005

MercuryI 1900 Solid Mercury Dihydride: Mercurophilic Bonding in Molecular HgH2 Polymers.

— The linear HgH2 molecule with strong IR absorptions at 1902 and 773 cm-1 is obtained by subjecting a sample of atomic mercury in solid hydrogen at 4.5 K to UV irradiation (Hg arc lamp). Annealing at 5—7 K leads to dimeric and trimeric HgH2, and warming up to above 7 K results in the sublimation of the hydrogen matrix and forma-tion of a solid molecular (HgH2)n polymer. This covalent molecular solid is character-ized by strong IR absorptions at 1802 and 673 cm-1 and by decomposition at 150—170 K. — (WANG, X.; ANDREWS*, L.; Inorg. Chem. 43 (2004) 22, 7146-7150; Dep. Chem., Univ. Va., Charlottesville, VA 22903, USA; Eng.) — Schramke

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