Raman effect with optically active substances

Abstract

It is already known from various investigations that the different isomeric forms of organic molecules give strikingly different Raman spectra. A noteworthy case is that of the cis- and trans- forms of dichlorethylene, which have been studied by Bonino and Brull (Zeit. fur Physik, 58, p. 194; 1929). These investigators have found that the most striking differences appear in the characteristic molecular frequencies lying in the remote infra-red and made so readily accessible to observation by the Raman method.