Wide-line NMR study of silicon-nitrogen compounds☆
作者： H. Levy
DOI: 10.1016/0022-1902(67)80442-1
关键词: Absorption spectroscopy 、 Molecular physics 、 Line (formation) 、 Rotation 、 Intermolecular force 、 Phase (matter) 、 Crystallography 、 Silicon 、 Atmospheric temperature range 、 Chemistry 、 Symmetry (physics)
摘要: Abstract (Me3Si)2NSi(Me)NCl3−N (N = 0, 1, 2, 3), (Me3Si)2NH, [(Me)2ClSi]2NH, and [(Me)2ClSiNSiMe2]2 were studied by wide line NMR over the temperature range 77–300°K. The experimental widths second moments calculated from absorption spectra. Theoretical shapes for various motions to determine actual inter-molecular intra-molecular present. In particular, rotation of MeNCl3−NSi 3) groups about SiN bond was studied. Powder X-rays taken five crystalline compounds same study possible phase changes. Activation energies found be present, an attempt made correlate barriers MeNCl3−NSi- their with changes in symmetry dπ-pπ bonding bond. However, it not show any definite correlation differences best explained intermolecular barriers.
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