Abstract
The mutual influence between anion–π and chalcogen bond interactions is studied by ab initio calculations at the MP2/6-311++G** level of theory. These effects are analysed in detail in terms of the structural, energetic, charge-transfer and electron density properties of the complexes. Interesting cooperativity effects are found when anion–π and chalcogen-bonding interactions coexist in the same complex. The effect of anion–π on the properties of chalcogen bonding is larger than that of chalcogen bonding on the properties of anion–π. The cooperative mechanism is analysed in terms of the electrostatic potentials, orbital interaction and electron density analysis.
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