Raman Spectrum of Crystalline Benzene

Abstract

Data are presented for the Raman spectrum of benzene and perdeutero-benzene at 77° and 2°K, with a resolution of 0.65 cm−1. Splittings are detected for all Raman-active degenerate vibrations but for none of the nondegenerate vibrations, with the possible exception of ν5(b2g) in C6H6. Interaction matrix elements are found for three degenerate bands where splittings seem to be uncontaminated by site-group splitting. Comparison is made between the present data and the recent calculations of Harada and Shimanouchi. Extension of the calculation to include intermolecular carbon—hydrogen interactions is indicated by the data.