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Dihydrogen bonding vs metal-σ interaction in complexes between H 2 and metal hydride

AuthorsAlkorta, Ibon ; Elguero, José ; Solimannejad, Mohammad; Grabowski, S. J.
Issue Date2011
PublisherAmerican Chemical Society
CitationThe journal of physical chemistry, A, Molecules, spectroscopy, kinetics, environment & general theory 115: 201- 210 (2011)
AbstractThe complexes formed by hydrogen with metal hydrides (LiH, NaH, BeH 2, MgH2, BH3, AlH3, Li 2H2, Na2H2, Be2H 4, and Mg2H4) have been theoretically studied at the MP2/aug-cc-pVTZ, MP2/aug-cc-pVQZ and CCSD(T)/aug-cc-pVTZ//CCSD/aug-cc- pVTZ levels of theory. The hydrogen molecule can act as a Lewis acid or base. In the first case, a dihydrogen bonded complex is obtained and in the second an interaction between the σ-bond of the hydrogen molecule and an empty orbital of the metal atoms is found. Quantum theory of atoms in molecules and natural bond orbitals methods have been applied to analyze the intermolecular interactions. Additionally, the cooperativity effects are analyzed for selected complexes with two H2 molecules where both kinds of interactions exist simultaneously. © 2010 American Chemical Society.
Publisher version (URL)http://dx.doi.org/10.1021/jp1100544
Identifiersdoi: 10.1021/jp1100544
issn: 1089-5639
Appears in Collections:(IQM) Artículos
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