On the theory of electron, H-atom and proton transfers

The initial part of this article discusses some recent experiments on electron transfer reactions and comments on the related theory, including the frequency of solvent fluctuations. Also described are recent advances with Babamov and Lopex on the dynamics of H-atom transfer reactions. We then outline the application of the basic idea to H and W transfers in complex systems and in condensed phases (fast H-coordinates, slow remaining coordinates). Similarities and differences between electron transfers and H or W transfers are next described. The relation of the present theory of such transfers to conventional transition state theory is discussed.