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Three pulse stimulated photon echo peak shift ͑3PEPS͒ measurements were used to probe the solvation of a quadrupolar solute in three room temperature nondipolar solvents; benzene, CCl 4 , and CS 2 , and the results were compared with those for two polar solvents, methanol and acetonitrile, and one weakly polar solvent, toluene. Our data reveal three distinct solvent dynamical time scales; a sub-100 fs ultrafast component attributed to inertial motions, a slow ͑ϳ2-3 ps͒ component attributed todoi:10.1063/1.480240 fatcat:zfz7pq6czffvvkb4uu6jj5zmya