期刊
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
卷 3, 期 5, 页码 1803-1817出版社
AMER CHEMICAL SOC
DOI: 10.1021/ct700113h
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The energy and its first and second geometrical derivatives obtained by DFT calculations for a number of conformations of a single molecule are used to parametrize intramolecular force fields, suitable for computer simulations. A systematic procedure is proposed to adequately treat either fully atomistic or more simplified force fields, as within the united atom approach or other coarse grained models. The proposed method is tested and validated by performing molecular dynamics simulations on several different molecules, comparing the results with literature force fields and relevant experimental data. Particular emphasis is given to the united atom approach for flexible molecules characterized by soft torsional potentials which are known to retain a high degree of chemical specificity.
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