An efficient algorithm for energy gradients and orbital optimization in valence bond theory

An efficient algorithm for energy gradients in valence bond theory with nonorthogonal orbitals is presented. A general Hartree-Fock-like expression for the Hamiltonian matrix element between valence bond (VB) determinants is derived by introducing a transition density matrix. Analytical expressions...

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Veröffentlicht in:Journal of computational chemistry. - 1984. - 30(2009), 3 vom: 15. Feb., Seite 399-406
1. Verfasser: Song, Lingchun (VerfasserIn)
Weitere Verfasser: Song, Jinshuai, Mo, Yirong, Wu, Wei
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2009
Zugriff auf das übergeordnete Werk:Journal of computational chemistry
Schlagworte:Journal Article Research Support, Non-U.S. Gov't