Microscopic diffusion control

{
  "id": "MLC-T-CHM-007356",
  "term": "Microscopic diffusion control",
  "field": "Chemistry",
  "definition": "A situation in a chemical reaction where the rate is limited by the diffusion of reactants to the immediate vicinity of each other, rather than by the intrinsic chemical transformation step. This occurs when the chemical reaction itself is very fast. The rate becomes dependent on the local movement of molecules in the solvent cage.",
  "synonyms": [
    "encounter control",
    "diffusion control",
    "transport control"
  ],
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "molecularity",
    "chemical reaction",
    "diffusion",
    "dissociation",
    "encounter",
    "encounter-controlled rate",
    "mixing control",
    "molecular entity",
    "precision",
    "order of reaction",
    "rate of reaction"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1140 (https://doi.org/10.1351/pac199466051077)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/microscopic-diffusion-control/"
}