Intervalence charge transfer

{
  "id": "MLC-T-CHM-005999",
  "term": "Intervalence charge transfer",
  "field": "Chemistry",
  "definition": "An electronic transition within a mixed-valence compound where an electron is optically excited from a lower-oxidation-state center to an adjacent higher-oxidation-state center. This process, also called metal-to-metal charge transfer, creates a charge-separated excited state from the ground state. The absorption band corresponding to this transition is characteristically broad and appears at low energy, frequently in the near-infrared or visible portions of the electromagnetic spectrum.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "electron transfer",
    "metal to metal charge transfer transition",
    "oxidation",
    "oxidation state"
  ],
  "references": [
    "PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2248 (https://doi.org/10.1351/pac199668122223)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/intervalence-charge-transfer/"
}