Use of test particle calculations for the derivation of van der Waals parameters used in force fields
Article first published online: 7 DEC 1998
Copyright © 1997 John Wiley & Sons, Inc.
Journal of Computational Chemistry
Volume 18, Issue 2, pages 211–220, 30 January 1997
How to Cite
Hill, J.-R. (1997), Use of test particle calculations for the derivation of van der Waals parameters used in force fields. J. Comput. Chem., 18: 211–220. doi: 10.1002/(SICI)1096-987X(19970130)18:2<211::AID-JCC6>3.0.CO;2-Y
- Issue published online: 7 DEC 1998
- Article first published online: 7 DEC 1998
- Manuscript Accepted: 25 APR 1996
- Manuscript Received: 2 FEB 1996
Test particle calculations are employed to derive van der Waals parameters for methane. It is shown that it is possible to derive these parameters completely based on ab initio calculations. The newly derived parameters are tested in molecular dynamics calculations of liquid methane and the results are compared with the results of existing force fields. It is shown that the newly derived parameters perform better in the prediction of the density, the heat of vaporization, and the self-diffusion coefficient of methane. Scaling of the parameters to account for systematic errors in the employed ab initio method does not generally improve the parameters with respect to the properties calculated. © 1997 by John Wiley & Sons, Inc.