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Browsing Chemistry & Biochemistry by Subject "convergence behavior"

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First-order symmetry-adapted perturbation theory for multiplet splittings 

Patkowski, Konrad; Zuchowski, Piotr S.; Smith, Daniel G. A.; https://orcid.org/0000-0002-4468-207X (2020-06-25)
We present a symmetry-adapted perturbation theory (SAPT) for the interaction of two high-spin open-shell molecules (described by their restricted open-shell Hartree-Fock determinants) resulting in low-spin states of the ...