In plots relating rate constants to charges in standard Gibbs energy
(
) for
electron transfer a region may occur in which the rate constants decrease as the exergonicity of the
reaction increases. This region is often referred to as the inverted region and its
presence is predicted by the theory developed for
outer sphere electron transfer for the case
in the
Marcus equation,
being the
reorganization energy. Note the similarity to the energy gap law for radiationless conversion of an
excited state.
Source:
PAC, 1996, 68, 2223
(Glossary of terms used in photochemistry (IUPAC Recommendations 1996))
on page 2249
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
