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Letters in Organic Chemistry


ISSN (Print): 1570-1786
ISSN (Online): 1875-6255

A New Proposal for the Estimation of the Aromatic Character

Author(s): Maurizio D`Auria

Volume 10, Issue 4, 2013

Page: [277 - 282] Pages: 6

DOI: 10.2174/1570178611310040009


new aromaticity index is proposed based on the energy of π orbital [π1 + (π1 - π2) + (π1 - π3)]. Calculations have been performed on aromatic and heteroaromatic compounds by using DFT method at B3LYP/6-311G+(d,p) level. This new index has been tested on 6π electron compounds and compared with the experimental resonance energy (ERE), the Bird index (Ix), the molar magnetic susceptibility (ΧM), the aromatic stabilization energy (ASE), and the isomerization stabilization energy (ISE). In all the cases, a good correlation has been found.

Keywords: Aromaticity, molecular orbitals, DFT calculations.

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