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A CI study of the CuCO and CuCO+ complexes

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A CI study of the CuCO and CuCO+ complexes

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dc.contributor.author Merchán Bonete, Manuela
dc.contributor.author Nebot Gil, Ignacio José
dc.contributor.author González Luque, Remedios
dc.contributor.author Ortí Guillén, Enrique
dc.date.accessioned 2010-06-14T09:31:07Z
dc.date.available 2010-06-14T09:31:07Z
dc.date.issued 1987
dc.identifier.uri http://hdl.handle.net/10550/12964
dc.language.iso en en
dc.relation http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JCPSA6000087000003001690000001&idtype=cvips&prog=normal&doi= en
dc.source MERCHAN, Manuela ; NEBOT GIL, Ignacio ; GONZÁLEZ LUQUE, Remedios ; ORTÍ, Enrique. A CI study of the CuCO and CuCO+ complexes. En: Journal of Chemical Physics, 1987, vol. 87, no. 3 en
dc.subject Configuration Interaction ; Electron Correlation ; Copper Compounds ; Carbonyls ; Copper Complexes ; Electronic Structure ; Valence en
dc.title A CI study of the CuCO and CuCO+ complexes en
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::FÍSICA en
dc.subject.unesco UNESCO::FÍSICA::Química física en
dc.identifier.doi 10.1063/1.453234 en
dc.description.abstractenglish MO CI calculations are carried out using an optimal space of valence virtual MOs obtained by means of a projection technique, as a linear combination of the AOs which are more occupied in the molecular Fock space. Localization of the occupied MOs and nonvalence virtual MOs is also achieved. The overall procedure is proven to be quite advantageous and well suited to obtain potential energy curves which keep the same physical meaning along the range of distances studied. Using a slightly better than double‐zeta quality basis set, a valence CAS‐CI, and selected CI wave function by the CIPSI algorithm have revealed a possible weak van der Waals interaction for the 2Σ+ state of CuCO, which remains when polarization functions are added to the basis set for the carbon and oxygen atoms. Even though the CuCO 2Π and CuCO+ 1Σ+ states are energetically close, the nature of the interactions is quite different, π bonding and mainly electrostatic, respectively. The results give further support to the view of the neutral metal–CO interaction as a balance of σ repulsion and π backbonding. However, it is proposed that the driving force for the positive ion metal–CO interaction becomes essentially electrostatic. en
dc.description.private Ignacio.Nebot@uv.es ; Manuela.Merchan@uv.es ; Enrique.Orti@uv.es en
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