Pre-reactive complexes

{
  "id": "MLC-T-CHM-009405",
  "term": "Pre-reactive complexes",
  "field": "Chemistry",
  "definition": "Transient molecular assemblies formed by reactants prior to the actual chemical reaction, held together by weak intermolecular forces. These complexes exist in a shallow potential energy well on the reaction pathway, preceding the transition state. Their formation can influence the kinetics and selectivity of a reaction.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "activation",
    "reaction path"
  ],
  "references": [
    "PAC, 1999, 71, 1919. 'Glossary of terms used in theoretical organic chemistry' on page 1958 (https://doi.org/10.1351/pac199971101919)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/pre-reactive-complexes/"
}