Light scattering studies of the depolarized Rayleigh line are reported for liquid benzene over the temperature range plus;13 to 76deg;C and for other substituted benzenes. Values of thelang; P2lpar;orpar;P2lpar;trpar;rang;andlang; Pdot;2lpar;orpar;Pdot;2lpar;trpar;rang;correlation functions calculated from these spectra show considerable free rotor behavior (sim; 15deg; steps) and incomplete loss of memory after collision. Further consideration of thelang; Pdot;2lpar;orpar;Pdot;2lpar;trpar;rang;correlation allows calculation of the angular velocity correlation function. The time between collisions, tgr;BC, is also obtained and found to be in good agreement with a ``moveable wall'' cell model. It is proposed that the ``shoulder'' noted in the wings of many anisotropic liquids is caused by incomplete loss of memory after collision.
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