Abstract.
The diagrammatic Rayleigh-Schrödinger perturbation theory for the interaction of two closed-shell systems is developed up to the third order of pertur-bation using orthogonalized orbitals. The interaction energy is expressed by the Rayleigh-Schrödinger perturbation expansion. A simple approach for the estimation of basis set superposition error is introduced. The preliminary calculations of the intermolecular interactions for the He dimer within the augmented cc-pVTZ basis set are compared with the supermolecular approach, perturbation calculation in biorthogonal basis sets and symmetry adapted perturbation theory results.
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Received: 17 December 1996 / Accepted: 5 November 1997
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Laurinc, V., Lukeś, V. & Biskupič, S. Perturbation calculation of the interaction energy using orthogonalized orbitals. Theor Chem Acc 99, 53–59 (1998). https://doi.org/10.1007/s002140050302
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DOI: https://doi.org/10.1007/s002140050302