Abstract
Nuclear magnetic interactions are time-dependent since they are modulated by changes in the position and/or the orientation of a molecule. These molecular motions depend on the intermolecular, and to some extent, intramolecular forces. Molecular forces are largely governed by electrostatic intermolecular potentials. Therefore, information concerning intermolecular forces and dynamics may be obtained through studying the timedependent characteristics of the nuclear spin. Molecular dynamics is a very complicated process even in normal liquids. In liquid crystals, where the molecules and the medium are highly anisotropic, the dynamic processes become extremely difficult to investigate. However, it is possible to treat the position or the orientation of a rigid molecule as a random variable and describe the dynamics of molecular motion by a stochastic approach.
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