Mutual influence between anion-π and pnicogen bond interactions: the enhancement of P⋯N and P⋯O interactions by an anion-π bond
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Updated: Apr 17, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Mehdi D Esrafili1, Fariba Mohammadian-Sabet1, Mohammad Solimannejad2
1Laboratory of Theoretical Chemistry, Department of Chemistry, University of Maragheh, Maragheh, Iran.
Abstract:
In this work, the interplay between anion-π and pnicogen bond interactions is investigated by ab initio calculations. Cooperative effects are observed in the studied complexes in which anion-π and pnicogen bond interactions coexist. These effects are analyzed in detail in terms of the energetic, geometric, charge-transfer and electron density properties of the complexes. The cooperative energy ranges from -1.8 to -4.1kcalmol(-1). The effect of an anion-π bond on a pnicogen bond is more pronounced than that of a pnicogen bond on an anion-π bond. The enhancing mechanism is analyzed in views with the charge-transfer, electrostatic potential and electron density analysis.
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