Raman and NMR investigation of molecular reorientation and internal rotation in liquids

Molecular rotational motions are known to influence both Raman scattering of light and nuclear spin relaxation. Therefore, the application of Raman bandshape analysis and NMR relaxation time measurements to probe molecular dynamics in liquids will provide us with a deeper understanding of the dynamical behavior and structure of molecules in the liquid phase.;Based upon the results from both Raman and NMR experiments, the parallel diffusion coefficients of both CH;In phenyl capped clusters, the slowed internal phenyl ring rotation can be used to probe intramolecular electronic and/or steric interactions by investigating the ;Presented here are (i) studies of molecular reorientation of acetonitrile in the neat liquid phase and in solution by Raman bandshape analysis and NMR relaxation; (ii) studies of reorientational dynamics and internal rotation in transition metal clusters by NMR relaxation.