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Issue 34, 2017
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Non-covalent interactions in anisole–(CO2)n (n = 1, 2) complexes

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Abstract

Non-covalent interactions are ubiquitous and represent a very important binding motif. The direct experimental measurement of binding energies in complexes has been elusive for a long time despite its importance, for instance, for understanding and predicting the structure of bio-macromolecules. Here, we report a combined experimental and computational analysis on the 1 : 1 and 1 : 2 clusters formed by anisole (methoxybenzene) and carbon dioxide molecules. We have obtained a detailed description of the interaction between CO2 and anisole. This system represents quite a challenging test for the presently available experimental and theoretical methods for the characterization of weakly bound molecular complexes. The results, evaluated in the framework of previous studies on anisole clusters, show a very good agreement between experimental and theoretical data. A comparison of the experimental and computational data enabled the binding energy values of the 1 : 1 and 1 : 2 clusters to be determined in the ground electronic state of the neutral and cation complex and in the first excited singlet state of the neutral complex. In addition, it was possible to adduce the presence of different 1 : 1+ conformers, prepared by direct ionization of the 1 : 1 complex or by dissociative ionization of the 1 : 2 complex.

Graphical abstract: Non-covalent interactions in anisole–(CO2)n (n = 1, 2) complexes

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Publication details

The article was received on 05 Jun 2017, accepted on 07 Aug 2017 and first published on 07 Aug 2017


Article type: Paper
DOI: 10.1039/C7CP03763E
Citation: Phys. Chem. Chem. Phys., 2017,19, 22749-22758
  • Open access: Creative Commons BY license
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    Non-covalent interactions in anisole–(CO2)n (n = 1, 2) complexes

    M. Becucci, F. Mazzoni, G. Pietraperzia, J. Řezáč, D. Natchigallová and P. Hobza, Phys. Chem. Chem. Phys., 2017, 19, 22749
    DOI: 10.1039/C7CP03763E

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