Cross sections for molecular aggregation with positional and orientational restrictions

摘要

Effects of molecular symmetry and intermolecular interactions on the cross section for associationndash;dissociation reactions are discussed. The cross section controls thermodynamic equilibrium, kinetics of aggregation, and sensitivity to external orienting fields. Example calculations indicate variation of the cross section for aggregation by several orders of magnitude and substantial changes in crystallization temperature of asymmetric rigid molecules.