Solvent dependent Raman bandshape analysis on CO containing molecules: Vibrational relaxation study

Solvent dependent Raman band studies of some carbonyl containing molecules have been carried out in chlorobenzene (CLB) and chloroform (CLF) solvents. The variation of bandwidth with the solvent concentration was discussed using different mechanisms. The vibrational and reorientational correlation times were studied corresponding to solvent concentrations. The reorientational correlation time follows with the liquid viscosity in molecules under study. It reflects about the nature of solvent molecules hindering to the orientational motion of solute in liquid solution.

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► Raman band of carbonyl containing molecules were studied using polar solvents.
► Bandwidth variation with solvent concentration was discussed.
► Vibrational and reorientational correlation times in binary mixtures were studied.
► Viscosity plays the major role in the intermolecular interactions in binary systems.