Raman and far‐infrared spectra of solid carbon tetrabromide

Abstract

Raman and far-infrared spectra of solid CBr, at temperatures between 20 K and the melting point, 365 K, have been recorded. Low-temperature results are compared with earlier data and with the predictions of a group theoretical analysis based on the known crystal structure. Isotopic and crystal field effects are distinguished. The number of Raman peaks, especially in the lattice and v3 regions, is compatible with a large unit cell. Certain features are interpreted with the help of recent spectra and calculations on solid SnBr, , which has a similar unit cell.