Reorientational and vibrational relaxation in liquid trichloracetonitrile

Abstract

The first- and second-order reorientational correlation functions were determined from i.r. and Raman bandshapes of ν s (CN)in liquid trichloracetonitrile and discussed in terms of the J-diffusion model. A consistent fit for G 1 r ( t) and G 2 r ( t) was possible for short times only (0–1.5 ps). The vibrational correlation functions, determined from Raman studies of the ν s (CN) and ν s (CC) bandshapes, are discussed in terms of recent theories of vibrational dephasing.