Rotational Isomerism in Oxalyl Chloride (ClOC–COCl)

Abstract

The Raman spectrum of liquid and the infrared absorption spectrum of liquid and gaseous oxalyl chloride have been investigated. The effects of dilution in benzene and of temperature upon the spectra were also studied. A tentative assignment has been made of all fundamental frequencies. From temperature intensity measurements in the Raman effect, the value of ΔH for the reaction C2h oxalyl chloride—C2v oxalyl chloride was found to be 2.8 kcal/mole. It is suggested that the high value of the depolarization factor for Rayleigh scattering indicates planar structure.