metal to metal charge transfer (MMCT) transition 

https://doi.org/10.1351/goldbook.M03869
An electronic transition of a bi- or poly-nuclear metal complex that corresponds to excitation populating an @ET07026@ in which considerable @E02011@ between two metal centres has occurred.
See also: intervalence charge transfer
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2254 [Terms] [Paper]
Citation: 'metal to metal charge transfer (MMCT) transition' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.M03869 RIS BibTex EndNote
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Last revised: February 24, 2014