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- W2007331390 abstract "The charge transfer (CT) interaction, the most time-consuming term in the general effective fragment potential method, is made much more computationally efficient. This is accomplished by the projection of the quasiatomic minimal-basis-set orbitals (QUAMBOs) as the atomic basis onto the self-consistent field virtual molecular orbital (MO) space to select a subspace of the full virtual space called the valence virtual space. The diagonalization of the Fock matrix in terms of QUAMBOs recovers the canonical occupied orbitals and, more importantly, gives rise to the valence virtual orbitals (VVOs). The CT energies obtained using VVOs are generally as accurate as those obtained with the full virtual space canonical MOs because the QUAMBOs span the valence part of the virtual space, which can generally be regarded as “chemically important.” The number of QUAMBOs is the same as the number of minimal-basis MOs of a molecule. Therefore, the number of VVOs is significantly smaller than the number of canonical virtual MOs, especially for large atomic basis sets. This leads to a dramatic decrease in the computational cost." @default.
- W2007331390 created "2016-06-24" @default.
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- W2007331390 date "2013-11-18" @default.
- W2007331390 modified "2023-10-13" @default.
- W2007331390 title "Charge transfer interaction using quasiatomic minimal-basis orbitals in the effective fragment potential method" @default.
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- W2007331390 doi "https://doi.org/10.1063/1.4829509" @default.
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