On binding forces between aromatic ring and quaternary ammonium compound.

Investigates the nature of the cation-pi interaction as a binding force in the binding of acetylcholine to acetylcholinesterase. Ab initio calculations for the complexes of tetramethylammonium cation with various substances; Comparison of Hartree-Frock and Moller-Plesset second-order perturbation treatments; Role of electron correlation effect.