Abstract
A simple method for computing accurate density-dependent dispersion coefficients is presented. The dispersion coefficients are modeled by a generalized gradient-type approximation to Becke and Johnson's exchange hole dipole moment formalism. Our most cost-effective variant, based on a disjoint description of atoms in a molecule, gives mean absolute errors in the C6 coefficients for 90 complexes below 10%. The inclusion of the missing long-range van der Waals interactions in density functionals using the derived coefficients in a pair wise correction leads to highly accurate typical noncovalent interaction energies.
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Dates
Type | When |
---|---|
Created | 14 years, 6 months ago (Jan. 28, 2011, 9:30 a.m.) |
Deposited | 2 years ago (Aug. 5, 2023, 5:37 a.m.) |
Indexed | 2 weeks, 4 days ago (Aug. 5, 2025, 8:41 a.m.) |
Issued | 14 years, 6 months ago (Jan. 27, 2011) |
Published | 14 years, 6 months ago (Jan. 27, 2011) |
Published Online | 14 years, 6 months ago (Jan. 27, 2011) |
Published Print | 14 years, 6 months ago (Jan. 28, 2011) |
Funders
1
National Science Foundation
10.13039/100000001
Region: Americas
gov (National government)
Labels
4
- U.S. National Science Foundation
- NSF
- US NSF
- USA NSF
Awards
1
- 200021_121577/1
@article{Steinmann_2011, title={A generalized-gradient approximation exchange hole model for dispersion coefficients}, volume={134}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.3545985}, DOI={10.1063/1.3545985}, number={4}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Steinmann, Stephan N. and Corminboeuf, Clemence}, year={2011}, month=jan }