Lyonium ion

{
  "id": "MLC-T-CHM-006849",
  "term": "Lyonium ion",
  "field": "Chemistry",
  "definition": "The cation formed by the protonation of a solvent molecule, resulting from the solvent's autoprotolysis. This species is the strongest acid that can exist in that specific solvent. The hydronium ion (H₃O⁺) is the lyonium ion in water, while the corresponding ion in methanol is the methyloxonium ion (CH₃OH₂⁺).",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "cation",
    "onium compounds"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1137 (https://doi.org/10.1351/pac199466051077)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/lyonium-ion/"
}