Spin-state transition

{
  "id": "MLC-T-CHM-011227",
  "term": "Spin-state transition",
  "field": "Chemistry",
  "definition": "A change in the total spin angular momentum of a metal ion in a coordination complex, usually induced by temperature, pressure, or light. This involves a rearrangement of electrons between different d-orbitals, leading to a shift between high-spin and low-spin configurations. Such transitions are observed in certain transition metal complexes, particularly those of iron(II).",
  "subject": "Inorganic Chemistry",
  "see_also": [
    "low-spin",
    "low-spin state"
  ],
  "references": [
    "PAC, 1994, 66, 577. 'Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)' on page 591 (https://doi.org/10.1351/pac199466030577)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/spin-state-transition/"
}