Abstract
Calculations for the complex of thymine and adenine are used to show that the supermolecule second-order Møller-Plesset perturbation theory (MP2) approach for evaluating interaction energies fails in certain cases because of the behavior of one of its components: the uncoupled Hartree-Fock dispersion energy. A simple approach for correcting the MP2 supermolecule interaction energies is proposed. It focuses on correcting a relatively small difference between the MP2 and coupled cluster interaction energies, which is a very appealing feature of the new approach considering a benchmark role played by coupled cluster results.
References
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Dates
Type | When |
---|---|
Created | 17 years, 10 months ago (Oct. 10, 2007, 6:13 p.m.) |
Deposited | 2 years, 2 months ago (June 24, 2023, 4:08 p.m.) |
Indexed | 2 weeks ago (Aug. 23, 2025, 9:33 p.m.) |
Issued | 17 years, 10 months ago (Oct. 10, 2007) |
Published | 17 years, 10 months ago (Oct. 10, 2007) |
Published Online | 17 years, 10 months ago (Oct. 10, 2007) |
Published Print | 17 years, 10 months ago (Oct. 14, 2007) |
@article{Cybulski_2007, title={The origin of deficiency of the supermolecule second-order Møller-Plesset approach for evaluating interaction energies}, volume={127}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.2795693}, DOI={10.1063/1.2795693}, number={14}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Cybulski, Slawomir M. and Lytle, Marion L.}, year={2007}, month=oct }