Singlet molecular oxygen

{
  "id": "MLC-T-CHM-013562",
  "term": "Singlet molecular oxygen",
  "field": "Chemistry",
  "definition": "An excited state of molecular oxygen (O2) in which all electrons are spin-paired, resulting in a total spin angular momentum of zero. This species is highly reactive and possesses different chemical properties compared to ground-state triplet oxygen. It can participate in oxidation reactions and is often generated photochemically through photosensitization.",
  "synonyms": [
    "singlet molecular dioxygen"
  ],
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "excited state",
    "ground state",
    "photosensitization",
    "quenching",
    "singlet state",
    "reaction path degeneracy",
    "triplet state"
  ],
  "references": [
    "PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 420 (https://doi.org/10.1351/pac200779030293)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/singlet-molecular-oxygen/"
}