Aromaticity

{
  "id": "MLC-T-CHM-000788",
  "term": "Aromaticity",
  "field": "Chemistry",
  "definition": "A property of cyclic, planar molecules with a delocalized pi-electron system that confers enhanced stability compared to their acyclic counterparts. This stabilization arises from the cyclic overlap of p-orbitals, leading to a closed shell of pi electrons. Hückel's rule states that a monocyclic planar system is aromatic if it possesses (4n + 2) pi electrons, where n is a non-negative integer.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "anisotropy",
    "delocalization",
    "diamagnetic",
    "heterocyclic compounds",
    "homoaromatic",
    "hydrocarbons",
    "magnetic susceptibility",
    "organometallic compounds",
    "resonance energy",
    "valence"
  ],
  "references": [
    "PAC, 1999, 71, 1919. 'Glossary of terms used in theoretical organic chemistry' on page 1923 (https://doi.org/10.1351/pac199971101919)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/aromaticity/"
}