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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
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Nine N-aryl-2-chloronicotinamides: supramolecular structures in one, two and three dimensions

Silvia Cuffini1, Christopher Glidewell, John N Low

  • 1Agência Córdoba Ciência-Unidad Ceprocor, Córdoba, Argentina.

Acta Crystallographica. Section B, Structural Science
|July 15, 2006
PubMed

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Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
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