M. G. Kuzmin
Activation barrier in
electron transfer reactions: illusion or reality?
of existing experimental evidence for excited-state electron transfer
mechanisms is presented. Special attention is drawn to the fact that smaller
value of reaction apparent rate constant relative to diffusion rate constant
can be caused not only by the existence of substantial potential barrier
(activation energy) but also by the formation of some intermediate. The model
of correlated electron transfer and medium reorganization is proposed and
discussed which describes kinetic features of electron transfer reactions more
adequately than conventional approaches.
Copyright (C) Chemistry Dept., Moscow State University, 2002