Aromatic Electronic Delocalization of Benzo Derivatives of Five-membered Heterocycles
نویسنده
چکیده
The aromaticity of some bicyclic heterocycles is discussed with the aid of the configuration analysis of the expansion coefficient matrices and the similarity analysis of the density matrices. The iso-it-electronic [9] annulenyl anion is taken as the aromatic reference compound for all the heterocyclic compounds considered. The restflts are compared with · those previously obtained from considerations of energy. In addition the question is posed whether the sub-structures display aromatic features.
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