Ansa compounds

{
  "id": "MLC-T-CHM-000649",
  "term": "Ansa compounds",
  "field": "Chemistry",
  "definition": "Macrocyclic compounds characterized by a bridge (ansa chain) connecting two non-adjacent positions of a larger ring system, often an aromatic ring. This bridge restricts the rotation of the larger ring, leading to unique stereochemical properties. Ansa compounds are frequently encountered in organometallic chemistry, particularly with metallocenes.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "cyclophanes"
  ],
  "references": [
    "PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1318 (https://doi.org/10.1351/pac199567081307)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/ansa-compounds/"
}