Ion pair

{
  "id": "MLC-T-CHM-006090",
  "term": "Ion pair",
  "field": "Chemistry",
  "definition": "An association between a cation and an anion in solution, held together by electrostatic forces, without forming a covalent bond. These pairs can be solvent-separated, where solvent molecules are interspersed between the ions, or contact ion pairs, where the ions are directly adjacent. Ion pairs influence reaction rates and equilibria in many chemical processes.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "common-ion effect",
    "constituent",
    "coulomb",
    "covalent bond",
    "dissociation",
    "ion pair return",
    "isotopic labelling",
    "relative permittivity",
    "special salt effect"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1126 (https://doi.org/10.1351/pac199466051077)",
    "PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1344 (https://doi.org/10.1351/pac199567081307)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/ion-pair/"
}