title: Actinide chemistry using singlet-paired coupled cluster and its combinations with density functionals.
abstract: Singlet-paired coupled cluster doubles (CCD0) is a simplification of CCD that relinquishes a fraction of dynamic correlation in order to be able to describe static correlation. Combinations of CCD0 with density functionals that recover specifically the dynamic correlation missing in the former have also been developed recently. Here, we assess the accuracy of CCD0 and CCD0+DFT (and variants of these using Brueckner orbitals) as compared to well-established quantum chemical methods for describing ground-state properties of singlet actinide molecules. The f(0) actinyl series (UO2(2+), NpO2(3+), PuO2(4+)), the isoelectronic NUN, and thorium (ThO, ThO(2+)) and nobelium (NoO, NoO2) oxides are studied.
authors.affiliation: Department of Chemistry, Rice University, Houston, Texas 77251-1892, USA.
authors.forename: Alejandro J
authors.initials: AJ
authors.lastname: Garza
authors.affiliation: Department of Chemistry, Rice University, Houston, Texas 77251-1892, USA.
authors.forename: Ana G
authors.initials: AG
authors.lastname: Sousa Alencar
authors.affiliation: Department of Chemistry and Department of Physics and Astronomy, Rice University, Houston, Texas 77251-1892, USA.
authors.forename: Gustavo E
authors.initials: GE
authors.lastname: Scuseria