Knowledge Bank

The Raman spectrum of $S2Br2$ has been excited with a 6-mw He-Ne laser, $6328\backslash AA$, and new depolarization rations of the Raman bands have been obtained. The Raman band at $68cm-1$ corresponding to the torsional mode is found to be polarized in disagreement with an eariler Raman investigation; the torsional mode is far-infrared active at $70cm-1$. The Raman band at $534cm-1$ is found to be polarized and of type A in contrast to earlier work in which this band was found to be depolarized and of type B. The Raman band at $304cm-1$ is found to be depolarized and of type B whereas in an earlier investigation the band was reported as polarized and of type A. The new Raman and infrared data have been correlated with the right-angle configuration of $C2$ symmetry and new assignments have been made. Six coincident Raman-and-infrared-active fundamentals are now known from this work and the work of others.