Structure, Bonding, and Relative Stability of the Ground and Low-Lying Electronic States of CuO2. The role of exact exchange
dc.contributor.author
dc.date.accessioned
2019-07-10T08:22:29Z
dc.date.available
2019-07-10T08:22:29Z
dc.date.issued
2009-01-15
dc.identifier.issn
1089-5639
dc.identifier.uri
dc.description.abstract
The C2v and Cs ground and low-lying states of doublet CuO2 are examined for a series of different density functionals (pure, hybrid, and meta-hybrid) and CCSD(T) methods. The effect of changing the B3LYP functional ao parameter is also explored. CCSD(T) results at the complete basis set limit show that the relative stability of the different electronic states is 2A2(C2v) < 2A''(Cs) < 2B2(C2v) < 2A'(Cs) << 2A1(C2v) < 2B1(C2v). Unlike CCSD(T), all DFT methods analyzed in this work erroneously predict the end-on 2A' state as the ground state for CuO2 irrespective of the type of functional and percentage of Hartree-Fock (exact) exchange included in the B3LYP-like functional. Among the different functionals tested, B3LYP gives the best geometries and relative energies for the different electronic states when compared to CCSD(T) results. As to the effect of the ao parameter is concerned, it is found that the B3LYP-like functional yielding better geometries contains 20% of exact exchange, although somewhat unexpectedly, for relative energies the B3LYP-like functional with a larger contribution of exact exchange (90%) is the one giving the smaller standard deviation
dc.format.extent
10 p.
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application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society (ACS)
dc.relation.isformatof
Versió postprint del document publicat a: https://doi.org/10.1021/jp8031379
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© Journal of Physical Chemistry A, 2009, vol. 113, núm. 7, p. 1308-1317
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Articles publicats (D-Q)
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Tots els drets reservats
dc.source
Güell Serra, Mireia Luis Luis, Josep Maria Rodríguez-Santiago, Luís Sodupe Roure, Mariona Solà i Puig, Miquel 2009 Structure, Bonding, and Relative Stability of the Ground and Low-Lying Electronic States of CuO2. The role of exact exchange Journal of Physical Chemistry A 113 7 1308 1317
dc.subject
dc.title
Structure, Bonding, and Relative Stability of the Ground and Low-Lying Electronic States of CuO2. The role of exact exchange
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.type.version
info:eu-repo/semantics/acceptedVersion
dc.identifier.doi
dc.identifier.idgrec
010579
dc.type.peerreviewed
peer-reviewed
dc.identifier.eissn
1520-5215