Hapticity

{
  "id": "MLC-T-CHM-005099",
  "term": "Hapticity",
  "field": "Chemistry",
  "definition": "A count of the adjacent donor atoms of one ligand that attach to the same metal center, written with the Greek letter eta and a superscript, as in eta-5-cyclopentadienyl, where all five ring carbons bind the metal. It differs from denticity, which counts the donor atoms a ligand binds through, adjacent or not, and is written with kappa. An allyl group bound through all three carbons is eta-3, and through one carbon eta-1.",
  "subject": "Organic and Biomolecular Chemistry",
  "references": [
    "PAC, 2022, 94, 353. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 2021)' on page 429 (https://doi.org/10.1515/pac-2018-1010)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/hapticity/"
}