Abstract
The molecular dynamics of the liquid systems benzene, hexafluorobenzene and the benzene-hexafluorobenzene “complex” have been investigated using i.r. and Raman lineshapes. Time correlation functions computed by the Fourier inversion of the appropriate spectral band shapes were used to probe the molecular motion. In the short time domain 0–1.5 ps there seems to be no preferred orientation between benzene and hexafluorobenzene. The results are consistent with the presence of weak intermolecular interactions which exist only during the lifetime of a molecular collision. Vibrational relaxation was found to be significant for the lower frequency modes.
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