The infrared and Raman spectra of some thioacetals

Abstract

The i.r. and Raman spectra of a number of thioacetals containing aromatic rings have been measured in the range of 1650–1000 cm^–1. Assignments for some frequencies are suggested by comparison with reference compounds and with deuteriated products. The influence of one or two sulphur atoms on adjacent group vibrations are demonstrated; methods of differentiation between benzaldehyde and benzophenone thioacetals and of characterization of the phenylthio-group are suggested. Comparison is made between some sulphur compounds and the corresponding oxy- or chloro-analogues.