EFFECTS OF ANISOTROPIC MOLECULAR ROTATIONAL DIFFUSION ON NUCLEAR MAGNETIC RELAXATION IN LIQUIDS

The equations for the relaxation time of a nuclear spin in a molecule undergoing diffusion reorientation have been extended to include fully anisotropic reorientation for a number of relaxation mechanisms. The full rotational diffusion tensor - both principal diffusion constants and orientation of the principal rotation axes - can be found by the measurement of the NMR relation times of an appropriate set of nuclei in the molecule.