Molecular dynamics and vibrational relaxations in liquid nitromethane. II. Raman, coherent anti-Stokes Raman spectroscopy, and transient optical Kerr effects in the totally symmetric ν4 mode in CH3NO2

Abstract

The vibrational relaxation of the ν4 mode of CH3NO2 liquid and its molecular dynamics are investigated. Temperature and solvent effects on vibrational dephasing and correlation times are discussed in terms of the adiabatic impact theory to infer that, in the molecular collision, the attractive part of intermolecular potential is explored. The statistical uncorrelation of rotational and vibrational relaxations is experimentally demonstrated.