Abstract
en Two differnt crystal modifications of hexaphenyldigermanium sulfide (C 6H 5GeSGe(C 6H 5) 3 (I and II were obtained by crystallization from hot benzene/methanol or form ethanol at 20°C. Single crystal X-ray structural analyses for both I (low temperature data at −130°C) and II (at 20°C) (I, R = 0.046; II, R = 0.048) were performed. I is monoclinic, P2 1/c, with a = 11.020(3), b = 15.473(3), c 18.606(3) »,π = 106.92(2)°, Z = 4; II is orthorhombic, P2 12 12 1, with a = 2.617(2), b = 17.345(3), c = 18.408(3) », Z = 4. The molecules have different conformeric structures with respect to a rotation of the (C 6H 6) 3Ge groups around the Ge bonds with very similar bond lenghts and angles. Bond data for I(II) are: GeS 2.212(1) and 2.261(1) » (2.227(2) and 2.240(2) »); GeC 1.933(4) ⋯ 1.971(4), mean 1.945(5) » (1.931(7)⋯1.954(7), mean 1.943(4) »); GeSGe 111.2(1)° (110.7(1)°). The Ge bond lenghts are comparable to those in thiogermanates and do not indicate significant π-bond contributions.
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