Möbius aromaticity

{
  "id": "MLC-T-CHM-007442",
  "term": "Möbius aromaticity",
  "field": "Chemistry",
  "definition": "A type of aromaticity found in cyclic systems where there is a single twist in the p-orbital overlap, resulting in an odd number of phase inversions around the ring. Unlike Hückel aromaticity, which follows the 4n+2 rule, Möbius aromatic systems are aromatic if they contain 4n electrons. This concept is often invoked to explain the stability of certain transition states in pericyclic reactions.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "Hückel (4n + 2) rule",
    "aromatic",
    "excited state",
    "pericyclic reaction",
    "transition state"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1141 (https://doi.org/10.1351/pac199466051077)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/mobius-aromaticity/"
}