Abstract
Abstract The infrared spectra of silyl and silyl-d3 cyanides in the gaseous state have been examined over the region from 300 to 3500 cm−1. In each case seven of the eight fundamental vibrations are observed directly; the low frequency skeletal bending fundamental is inferred from its first overtone. Coarse rotational structure of two of the perpendicular fundamentals of SiH3CN are analyzed in terms of the Coriolis coefficients. Isotopic shifts produced by 13C and 15N in the CN stretching mode of SiD3CN provide strong evidence for the normal cyanide structure rather than the earlier postulated isocyanide form.
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