Eclipsing strain

{
  "id": "MLC-T-CHM-003545",
  "term": "Eclipsing strain",
  "field": "Chemistry",
  "definition": "The destabilization of a molecule arising from the repulsive interactions between electron clouds of substituents on adjacent atoms when they are in an eclipsed conformation. This strain is a component of torsional strain and contributes to the overall conformational energy of a molecule. It is typically observed in acyclic systems where rotation around a single bond is possible, such as in ethane.",
  "synonyms": [
    "bond opposition strain",
    "Pitzer strain",
    "torsional strain"
  ],
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "intramolecular",
    "eclipsed",
    "nonbonded interactions",
    "free rotation",
    "rotational barrier",
    "strain"
  ],
  "references": [
    "PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2206 (https://doi.org/10.1351/pac199668122193)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/eclipsing-strain/"
}