Abstract
Results of recent investigations concerning the relation between scalar one-bond 29Si 15N spin-spin coupling constants ( 1 J(SiN)) and the structure of nitrogen-containing organosilicon compounds are summarized. The 1 J(SiN) show marked sensitivity to hybridization of the N and Si atoms, the length of the NSi bond, its polarity, and the extent of d π p π bonding. A quantitative relationship between 1 J(SiN) and the s-character of the NSi bond reveals atypical cases of pyramidal nitrogen atoms in aminosilanes and allows the characterization of the reactivity of compounds having a NSi bond. 29Si 15N couplings via the cordinate N → Si bond provide quantitative data as to the length, free energy of dissociation and the order of this bond in solution.
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