Alkene photodimerization

{
  "id": "MLC-T-CHM-012853",
  "term": "Alkene photodimerization",
  "field": "Chemistry",
  "definition": "A photochemical reaction where two alkene molecules combine to form a cyclobutane dimer upon absorption of light. This process involves the excitation of one or both alkene molecules to an electronically excited state, followed by bond formation. The reaction can proceed through concerted or stepwise mechanisms, yielding different stereoisomers.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "alkenes",
    "electronically excited state",
    "alkene photocycloaddition"
  ],
  "references": [
    "PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 301 (https://doi.org/10.1351/pac200779030293)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/alkene-photodimerization/"
}