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Can lone pair-π and cation-π interactions coexist? A theoretical study

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Estarellas C., Frontera A., Quiñonero D., Deyà P.
Open Chemistry
|
2011
|
vol. 9
|
issue 1
25-34
EN
The interplay between two important noncovalent interactions involving different aromatic rings is studied by means of ab initio calculations (MP2/6-31++G**) computing the non-additivity energies. In this study we demonstrate the existence of cooperativity effects when cation-π and lone pair-π interactions coexist in the same system. These effects are studied theoretically using energetic and geometric features of the complexes. In addition we use Bader’s theory of atoms-in-molecules and Molecular Interaction Potential with polarization (MIPp) partition scheme to characterize the interactions. Experimental evidence for this combination of interactions has been obtained from the Cambridge Structural Database. [...]
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