期刊
JOURNAL OF COMPUTATIONAL CHEMISTRY
卷 30, 期 14, 页码 2187-2193出版社
WILEY
DOI: 10.1002/jcc.21226
关键词
quantum chemistry; electronic structure; coupled cluster theory; molecular mechanics; computational chemistry
资金
- National Science Foundation [CHE-0715268, 0438741]
- CRIF [CHE-04-43564]
- Petroleum Research Fund [44262-AC6]
- Division of Scientific User Facilities
- U.S. Department of Energy
- SDSC Strategic Applications Collaborations program
- Office of Advanced Cyberinfrastructure (OAC)
- Direct For Computer & Info Scie & Enginr [0438741] Funding Source: National Science Foundation
Several popular force fields, namely, CHARMM, AMBER, OPLS-AA, and MM3, have been tested for their ability to reproduce highly accurate quantum mechanical potential energy curves for noncovalent interactions in the benzene dimer, the benzene-CH4 complex, and the benzene-H2S complex. All of the force fields are semi-quantitatively correct, but none of them is consistently reliable quantitatively. Re-optimization of Lennard-Jones parameters and symmetry-adapted perturbation theory analysis for the benzene dimer suggests that better agreement cannot be expected unless more flexible functional forms (particularly for the electrostatic contributions) are employed for the empirical force fields. (C) 2009 Wiley Periodicals, Inc. J Comput Chem 30: 2187-2193, 2009
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