Half-chair

{
  "id": "MLC-T-CHM-005073",
  "term": "Half-chair",
  "field": "Chemistry",
  "definition": "A conformation of a six-membered ring, such as cyclohexane, that is intermediate between the chair and boat forms. In this conformation, four atoms lie in a plane, while the other two are displaced on opposite sides of that plane. It is a high-energy transition state or an unstable intermediate in the interconversion of chair conformations.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "chair, boat, twist",
    "conformation"
  ],
  "references": [
    "PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2209 (https://doi.org/10.1351/pac199668122193)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/half-chair/"
}