Vibrational Spectra and Structure of Acetone Oxime and Acetone Oxime-O-d
Abstract
The infrared and Raman spectra of acetone oxime have been investigated from 70 to 4000 cm?1. Spectra have been obtained for the gaseous, liquid, and polycrystalline materials, and the data have been interpreted in detail. A suggested vibrational assignment for the molecule is based upon group frequency correlations, relative band intensities, and isotopic and vapor‐solid frequency shifts. The interesting methyl torsional vibrations were assigned to a band at 217 cm?1 in the infrared spectrum recorded at liquid nitrogen temperatures. The magnitude of the internal rotational barrier for solid acetone oxime is estimated to be 3.0 kcal/mole. The results of this analysis are considered in conjunction with previous studies on similar molecules.