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Monatshefte für Chemie / Chemical Monthly

, Volume 117, Issue 1, pp 33–45 | Cite as

The number ofKekulé structures of hexagon-shaped benzenoids and members of other related classes

  • Sven J. Cyvin
Anorganische Und Physikalische Chemie

Abstract

Some results from the enumeration ofKekulé structures are reviewed; they pertain to parallelogram-shaped, bent strips, chevrons and symmetrical hexagon-shaped benzenoids. The existing formulas are extended to the class of asymmetrical hexagons. Applications of the new formula reproduces a number of known results for three-tier and four-tier strips. In the latter case also some new formulas are achieved.

Keywords

Kekulé structures Benzenoids 

Die Anzahl derKekulé-Strukturen von Benzenoiden mit sechseckigem Umriβ und Mitgliedern anderer verwandter Klassen

Zusammenfassung

Es wird ein Überblick über die Berechnung der Anzahl möglicherKekulé-Strukturen von benzenoiden Verbindungen unterschiedlicher Formenklassen gegeben. Dabei werden die existierenden Formeln für die Klasse asymmetrischer Sechseckformen ausgeweitet und die neue Formel auch an bekannten Ergebnissen erprobt.

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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Sven J. Cyvin
    • 1
  1. 1.Division of Physical ChemistryThe University of TrondheimTrondheim-NTHNorway

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