{"term":{"id":"03869","title":"metal to metal charge transfer transition","longtitle":"IUPAC Gold Book - metal to metal charge transfer transition","doi":"10.1351\/goldbook.M03869","code":"M03869","status":"current","initialism":"<em>initialism<\/em>: MMCT","synonym":"<em>synonym<\/em>: MMCT transition","definitions":[{"id":1,"text":"An electronic transition of a bi- or poly-nuclear metal complex that corresponds to excitation populating an electronic state in which considerable electron transfer between two metal centres has occurred.","links":[{"term":"electron transfer","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/E02011"},{"term":"electronic state","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/ET07026"},{"term":"intervalence charge transfer","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/I03125"}],"sources":["PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2254 (https:\/\/doi.org\/10.1351\/pac199668122223)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/M03869\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/M03869\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/M03869\/plain"},"citation":"Citation: 'metal to metal charge transfer transition' 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.M03869","license":"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.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"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.","accessed":"2026-06-10T10:05:15+00:00"}}