A semiempirical formulation for the study of molecular interactions

The coefficients of a 1/R expansion (containing long‐range electrostatic interaction, medium‐range electrostatic‐induced dipole attraction, short‐range dispersive attraction, and very short overlap interaction terms) have been determined, within a semiempirical approach, from the results of a priori calculations. The formulation has been applied to the study of the stable conformations of benzene complexes.