A comparative study of the interaction-induced spectra of liquid CS₂

Abstract

The ‘forbidden’ Raman spectra of the antisymmetric stretch and bending modes of CS₂ are studied on dilution in a series of solvents. The variation of the Raman intensity with concentration supports the conclusion of earlier work—that the interaction-induced polarizability is caused by the action of the re-radiated field gradients from neighbours on the vibrationally modulated quadrupole polarizability. The change in the antisymmetric stretch lineshape shows that the profile of this band is predominantly determined by a resonance energy transfer mechanism.