title: Substituent constant for drug design studies based on properties of organic electron donor--acceptor complexes.
abstract: A new model chemical system based on organic electron donor--aceptor complexes is described. From values of equilibrium constants measured by an NMR technique, a predictable parameter for use in quantitative structure--activity relationship techiques is discussed.
mesh_terms: D004583:Electrons; D008956:Models, Chemical; D011789:Quantum Theory; D013329:Structure-Activity Relationship