Ortho-fused

{
  "id": "MLC-T-CHM-008337",
  "term": "Ortho-fused",
  "field": "Chemistry",
  "definition": "Describing a polycyclic system where two rings share exactly two adjacent atoms, forming a common bond. This type of fusion is common in aromatic and heterocyclic compounds, leading to a planar or nearly planar molecular structure. Naphthalene is a classic example of an ortho-fused bicyclic aromatic hydrocarbon.",
  "subject": "Organic and Biomolecular Chemistry",
  "references": [
    "Blue Book, p. 22 (https://www.acdlabs.com/iupac/nomenclature/)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/ortho-fused/"
}