Aromaticity of the planar hetero[8]circulenes and their doubly charged ions: NICS and GIMIC characterization

G. V. Baryshnikov, R. R. Valiev, N. N. Karaush, B. F. Minaev

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Abstract

A series of planar hetero[8]circulenes and their doubly charged ions are studied by the NICS and GIMIC methods to interpret the aromatic properties of these high symmetry species. In accordance with the performed calculations all studied hetero[8]circulenes are found to be nonaromatic compounds because paratropic and diatropic ring-currents are completely canceled yielding almost zero net current. In great contrast, the dicationic and dianionic hetero[8]circulenes demonstrate the predominant contribution of diatropic ring currents resulting in the total aromatic character of the studied doubly charged ions. This fact allows us to predict the high stability of dianionic hetero[8]circulenes and explains the extremely high stability of dicationic species observed in the mass-spectra. This journal is

Original languageEnglish
Pages (from-to)15367-15374
Number of pages8
JournalPhysical Chemistry Chemical Physics
Volume16
Issue number29
DOIs
Publication statusPublished - 7 Aug 2014

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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