Repulsive potential-energy surface

{
  "id": "MLC-T-CHM-010213",
  "term": "Repulsive potential-energy surface",
  "field": "Chemistry",
  "definition": "A potential energy surface on which an exergonic atom-diatom reaction A + BC meets its barrier late, once A and B have already moved close together. Most of the reaction energy is therefore released after the A-B bond forms, as the products separate under mutual repulsion. The same surface type goes by the name late-downhill, and its barrier is classed as type II.",
  "synonyms": [
    "late-downhill surface"
  ],
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "exergonic reaction",
    "potential-energy profile",
    "reaction path"
  ],
  "references": [
    "PAC, 1996, 68, 149. 'A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)' on page 185 (https://doi.org/10.1351/pac199668010149)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/repulsive-potential-energy-surface/"
}