03125 IUPAC Gold Book - intervalence charge transfer 10.1351/goldbook.I03125 I03125 current 1 Electron transfer (thermal or photoinduced) between two metal sites differing only in oxidation state. Quite often such electron transfer reverses the oxidation states of the sites. The term is frequently extended to the case of metal-to-metal charge transfer between non-equivalent metal centres. Electron transfer https://goldbook.iupac.org/terms/view/E02011 metal-to-metal charge transfer https://goldbook.iupac.org/terms/view/M03869 oxidation https://goldbook.iupac.org/terms/view/O04362 oxidation state https://goldbook.iupac.org/terms/view/O04365 PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2248 (https://doi.org/10.1351/pac199668122223) https://goldbook.iupac.org/terms/view/I03125/html https://goldbook.iupac.org/terms/view/I03125/json https://goldbook.iupac.org/terms/view/I03125/plain Citation: 'intervalence charge transfer' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.I03125 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-05-09T19:06:21+00:00