A gas-phase electron diffraction study of the molecular structure of 1,1-difluoroethane |
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| Authors: | B. Beagley M.O. Jones N. Houldsworth |
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| Affiliation: | Department of Chemistry, University of Manchester Institute of Science and Technology, Sackuille Street, Manchester M60 1QD Gt. Britain |
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| Abstract: | The molecular structure of 1,1-difluoroethane has been studied using gas-phase electron diffraction data collected on the Balzers KDG2 instrument. Effective least-squares refinement of the geometry was achieved with fixed values for vibrational amplitudes transferred from normal coordinate calculations on related molecules. In subsequent calculations, in which several amplitudes were also allowed to refine, only minor changes were noted. The refinements yielded the following main geometrical parameters (ravalues with e.s.d. in parentheses): C—C = 1.498(4) Å, C—F = 1.364(2) Å, C—H(mean) = 1.081(3) Å, ∠CCH(mean) = 111.0(7)°, ∠CCF = 110.7(3)°, ∠FCF = 107.4(5)°. Dependent angles are ∠FCH = 108.5(8)° and ∠HCH = 107.9(7)°. |
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