Article,

Communication: Extended multi-state complete active space second-order perturbation theory: Energy and nuclear gradients

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J. Chem. Phys., (2011)
DOI: 10.1063/1.3633329

Abstract

The extended multireference quasi-degenerate perturbation theory, proposed by Granovsky [J. Chem. Phys. 134, 214113 (2011)], is combined with internally contracted multi-state complete active space second-order perturbation theory (XMS-CASPT2). The first-order ...

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