Low-frequency infrared spectra of metal carbonyl halides and their derivatives

Abstract

The infrared spectra of neutral and anionic metal carbonyl halides of Groups VI, VII, and VIII have been studied in the 800-200 cm.-1 region. Bands due to metal-carbon stretching vibrations and metal-carbon-oxygen bending vibrations are assigned, where possible, by analogy with the infrared spectra of the Group VI hexacarbonyls. Bands due to metal-chlorine and metal-bromine stretching vibrations have also been located, and splitting of these bands in some of the chlorides has been ascribed to vibrations involving the chlorine-35 and chlorine-37 isotopes. The far-infrared spectra of some substitution products of the manganese carbonyl halides have been studied, and the effect of substitution on the metal-halogen stretching frequencies is discussed. Show more