Alternant

{
  "id": "MLC-T-CHM-000452",
  "term": "Alternant",
  "field": "Chemistry",
  "definition": "Describing a conjugated hydrocarbon in which the carbon atoms can be conceptually divided into two sets, such that atoms of one set are bonded only to atoms of the other. This structural classification means the molecule contains no odd-membered rings. In the Hückel molecular orbital approximation, alternant hydrocarbons have paired bonding and antibonding orbitals symmetrically distributed about the non-bonding energy level.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "conjugated system"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1082 (https://doi.org/10.1351/pac199466051077)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/alternant/"
}