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Issue 15, 2006
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Aromaticity rules for cycles with arbitrary numbers of half-twists

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Abstract

A simple proof is given that the Hückel aromaticity rules generalise to cycles with an arbitrary number of half-twists, T; addition/removal of half-twists two at a time preserves all eigenvalues and degeneracies, so that closed-shell aromatic systems occur at π-electron counts 4N + 2, and antiaromatic at 4N for even T, and vice versa for odd T.

Graphical abstract: Aromaticity rules for cycles with arbitrary numbers of half-twists

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Article information


Submitted
03 Feb 2006
Accepted
17 Feb 2006
First published
20 Mar 2006

Phys. Chem. Chem. Phys., 2006,8, 1775-1777
Article type
Communication

Aromaticity rules for cycles with arbitrary numbers of half-twists

P. W. Fowler and H. S. Rzepa, Phys. Chem. Chem. Phys., 2006, 8, 1775
DOI: 10.1039/B601655C

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