Tropylium ions

{
  "id": "MLC-T-CHM-012326",
  "term": "Tropylium ions",
  "field": "Chemistry",
  "definition": "A stable, aromatic carbocation consisting of a seven-membered carbon ring with six pi electrons, satisfying Hückel's rule for aromaticity. It has the chemical formula C7H7+. This cation is often formed by the removal of a hydride ion from cycloheptatriene and is a key intermediate in many organic reactions.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "carbenium ion",
    "detachment",
    "hydron"
  ],
  "references": [
    "PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1373 (https://doi.org/10.1351/pac199567081307)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/tropylium-ions/"
}