The electron density of delocalized bonds (EDDB) applied for quantifying aromaticity

Literature Information

Publication Date 2017-10-17
DOI 10.1039/C7CP06114E
Impact Factor 3.676
Authors

Dariusz W. Szczepanik, Marcin Andrzejak, Justyna Dominikowska, Barbara Pawełek, Tadeusz M. Krygowski, Halina Szatylowicz, Miquel Solà


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Abstract

In this study the recently developed electron density of delocalized bonds (EDDB) is used to define a new measure of aromaticity in molecular rings. The relationships between bond-length alternation, electron delocalization and diatropicity of the induced ring current are investigated for a test set of representative molecular rings by means of correlation and principal component analyses involving the most popular aromaticity descriptors based on structural, electronic, and magnetic criteria. Additionally, a qualitative comparison is made between EDDB and the magnetically induced ring-current density maps from the ipsocentric approach for a series of linear acenes. Special emphasis is given to the comparative study of the description of cyclic delocalization of electrons in a wide range of organic aromatics in terms of the kekulean multicenter index KMCI and the newly proposed EDDBk index.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
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