Semiquinones

{
  "id": "MLC-T-CHM-010735",
  "term": "Semiquinones",
  "field": "Chemistry",
  "definition": "Radical anions formed by the one-electron reduction of a quinone or, alternatively, by the one-electron oxidation of a hydroquinone. These species contain an unpaired electron and are intermediates in many biological electron-transfer processes, including photosynthesis and cellular respiration. They are characteristically more stable than many other organic radicals due to resonance delocalization of the unpaired electron and negative charge.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "quinones"
  ],
  "references": [
    "PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1365 (https://doi.org/10.1351/pac199567081307)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/semiquinones/"
}