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Study on the Cation‐π Interactions between Ammonium Ion and Aromatic π Systems

Study on the Cation‐π Interactions between Ammonium Ion and Aromatic π Systems The nature and strength of the cation‐π interactions betweenand toluene, p‐cresol, or Me‐indole were studied in terms of the topological properties of molecular charge density and binding energy decomposition. The results display that the diversity in the distribution pattern of bond and cage critical points reflects the profound influence of the number and nature of substituent on the electron density of the aromatic rings. On the other hand, the energy decomposition shows that dispersion and repulsive exchange forces play an important role in the organic cation ()‐π interaction, although the electrostatic and induction forces dominate the interaction. In addition, it is intriguing that there is an excellent correlation between the electrostatic energy and ellipticity at the bond critical point of the aromatic π systems, which would be helpful to further understand the electrostatic interaction in the cation‐π complexes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chinese Journal of Chemistry Wiley

Study on the Cation‐π Interactions between Ammonium Ion and Aromatic π Systems

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References (38)

Publisher
Wiley
Copyright
Copyright © 2006 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1001-604X
eISSN
1614-7065
DOI
10.1002/cjoc.200690287
Publisher site
See Article on Publisher Site

Abstract

The nature and strength of the cation‐π interactions betweenand toluene, p‐cresol, or Me‐indole were studied in terms of the topological properties of molecular charge density and binding energy decomposition. The results display that the diversity in the distribution pattern of bond and cage critical points reflects the profound influence of the number and nature of substituent on the electron density of the aromatic rings. On the other hand, the energy decomposition shows that dispersion and repulsive exchange forces play an important role in the organic cation ()‐π interaction, although the electrostatic and induction forces dominate the interaction. In addition, it is intriguing that there is an excellent correlation between the electrostatic energy and ellipticity at the bond critical point of the aromatic π systems, which would be helpful to further understand the electrostatic interaction in the cation‐π complexes.

Journal

Chinese Journal of ChemistryWiley

Published: Nov 1, 2006

Keywords: ; ; ;

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