Halonium ions

{
  "id": "MLC-T-CHM-005084",
  "term": "Halonium ions",
  "field": "Chemistry",
  "definition": "Cations of the form R2X+, in which a positively charged halogen atom (bromonium, chloronium, fluoronium or iodonium) is bonded to two carbon groups, either in an open chain, as in diaryliodonium salts, or in a ring. The three-membered cyclic type is called a halirenium ion and forms as an intermediate when halogens add to alkenes, giving anti addition products.",
  "subject": "Organic and Biomolecular Chemistry",
  "references": [
    "PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1339 (https://doi.org/10.1351/pac199567081307)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/halonium-ions/"
}