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Aromatic Character and Energy of the Five- and Seven-Membered Rings in Derivatives of Penta- and Heptafulvene Substituted in Exocyclic Position

T. M. Krygowski, A. Ciesielski, and M. Cyranski

Department of Chemistry, University of Warsaw, PL-02 093 Warsaw

 

Abstract: Application of aromaticity indices to geometries of rings of eleven derivatives of fulvene, two salts of cyclopentadienyl, and nine derivatives of heptafulvene gives a coherent view in line with expectation due to the (4n + 2) rule: electron-donating substituents attached to exocyclic carbon atom in fulvenes and electron-accepting substituents attached to heptafulvenes increase significantly their aromatic character.

Full paper in Portable Document Format: 493a128.pdf

 

Chemical Papers 49 (3) 128–132 (1995)

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