Electron diffraction determination of the molecular structures of difluoro(dimethyl) germane and trifluoro(methyl)germane in the vapour phase

The molecular structures of the title compounds in the gas phase have been determined by electron diffraction. The analyses were based on the rg interatomic distances. For Me2GeF2 principal parameters are: rg(Ge–C) 1.928 ± 0.003 A, rg(Ge–F) 1.739 ± 0.002A; F–Ge–F 105.4 ± 2.0°, F–Ge–C 107.3 ± 0.7°, and C–Ge–C 121.0 ± 3.5°. For MeGeF3 principal parameters are: rg(Ge–F) 1.714 ± 0.002, rg(Ge–C) 1.904 ± 0.009 A; F–Ge–F 105.5 ± 0.9°, and F–Ge–C 113.2 ± 0.6°(uncertainties estimated to include both systematic and random errors). Observed variations in r(Ge–F) and r(Ge–C) are correlated with estimated bond polarities.