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Intermolecular weak interactions in HTeXH dimers (X=O, S, Se, Te): Hydrogen bonds, chalcogen-chalcogen contacts and chiral discrimination

AuthorsSánchez-Sanz, G.; Trujillo, C.; Alkorta, Ibon ; Elguero, José
Issue Date2012
PublisherJohn Wiley & Sons
CitationChemphyschem : European journal of chemical physics and physical chemistry 13: 496- 503 (2012)
AbstractA theoretical study of the HTeXH (X=O, S, Se and Te) monomers and homodimers was carried out by means of second-order Mller-Plesset perturbation theory (MP2) computational methods. In the case of monomers, the isomerization energy from HTeXH to H 2Te=X and H 2X=Te (X=O, S, Se, and Te) and the rotational transition-state barriers were obtained. Due to the chiral nature of these compounds, homo and heterochiral dimers were found. The electron density of the complexes was characterized with the atoms-in-molecules (AIM) methodology, finding a large variety of interactions. The charge transfer within the dimers was analyzed by means of natural bond orbitals (NBO). The density functional theory-symmetry adapted perturbation theory (DFT-SAPT) method was used to compute the components of the interaction energies. Hydrogen bonds and chalcogen-chalcogen interactions were characterized and their influence analyzed concerning the stability and chiral discrimination of the dimers. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Identifiersdoi: 10.1002/cphc.201100830
issn: 1439-4235
Appears in Collections:(IQM) Artículos
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