3-CENTER CORRECTION TO SOLVENT REORGANIZATION ENERGY IN ELECTRON-TRANSFER REACTIONS

Many donor/acceptor centers are often involved in electron transfer in supramolecular systems with a variety of competitive pathways, either direct or mediated by energetically suitable bridging molecules. In t his Letter, complementary to the previous study by Motylewski et al. ( Chem. Phys. 212 (1996) 193) on electron transfers in a model triad sys tem, a simple expression for the three-center correction to the solven t reorganization energy is derived within the dielectric continuum mod el. Applications of the results obtained to recent experimental findin gs are discussed. (C) 1998 Elsevier Science B.V.