Raman spectra of some triatomic molecules

Abstract

It was observed by me 1 and also independently by Dickinson and West 2 that liquid sulphur dioxide gives three Raman frequencies. The measured wave-number shifts were 526, 1146, and 1340, the line corresponding to 1146 being much more intense and sharper than the two others. The spectrum of sulphur dioxide gas has since been successfully photographed by me and exhibits a frequency 1154, which is distinctly greater than the value 1146 obtained with the liquid and agrees much better with the infra-red value 1152 found for the gas by Bailey, Cassie, and Angus.3 The two other lines are presumably too weak to be recorded in the case of the gas.