Raman and Rayleigh spectroscopy and molecular motions

Abstract

Self-broadening of the Raman bands of HCl, DCl, HBr and DBr gases and their broadening by gaseous SF₆ and C₂F₆ have been studied. The results are compared with calculations using Van Kranendonck's theory. It is shown that self-broadening of the isotropic Q branch does not follow the theory while broadening by an inert gas does. Self-broadening of pure rotation and vibration-rotation spectra is in good agreement with Gray's results; but the intensity distribution in the spectrum may in part be explained as due to the existence of an associated complex with a dissociation energy of about 500 cm^-1.