Molecular structures of (SiCl3)2CH2 and (SiCl3)2CCl2 as studied by electron diffraction期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Molecular structures of (SiCl₃)₂CH₂ and (SiCl₃)₂CCl₂ as studied by electron diffraction

Authors:	E Vajda M Kolonits B Rozsondai G Fritz E Matern

Institution:	Research Laboratory for Inorganic Chemistry of the Hungarian Academy of Sciences, Budapest, P.O. Box 117, H-1431 Hungary;Institute of Inorganic Chemistry, University of Karlsruhe, Karlsruhe, West Germany

Abstract:	An electron diffraction analysis of the molecular structures of 1,1,1,3,3,3-hexachloro-1,3-disilapropane and octachloro-1,3-disilapropane has been carried out. Deviations from the staggered conformation are indicated. The data may be approximated by models with C₂ symmetry and a small tilt of the SiCl₃ groups. The main bond lengths (r_g) and bond angles obtained for (SiCl₃)₂ CH₂ are: SiCl, 202.7(4); SiC, 186.6(6); CH, 109.8(24) pm, ClSiCl, 107.9(1); SiCSi, 118.3(7)°; and for (SiCl₃)₂CCl₂: SiCl, 202.0(4); SiC, 190.2(9); CCl, 179.6(9) pm; ClSiCl, 109.5(1); SiCSi, 120.6(9); ClCCl, 110.9(16); SiCCl, 106.3(3)°.

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