Crossref journal-article
AIP Publishing
The Journal of Chemical Physics (317)
Abstract

The potentials of mean force between sodium and chloride ions and between sodium and dimethylphosphate ions in aqueous solution are calculated by the probability ratio method using adaptive umbrella sampling Monte Carlo with a variety of simulation setups. The potential of mean force of sodium chloride is found to have only one minimum in contradiction to earlier molecular dynamics results with the same intermolecular potentials, but different boundary conditions. Our result in the region of contradiction is supported by large system size and free energy perturbation calculations. It is established that the difference is due to the respective boundary condition schemes employed. This result is to be regarded as a consequence of the potential function scheme employed and not necessarily as a statement about actual aqueous sodium chloride. A similar dependence of the existence of the second minimum on boundary conditions is observed for the sodium-dimethylphosphate PMF.

Bibliography

Friedman, R. A., & Mezei, M. (1995). The potentials of mean force of sodium chloride and sodium dimethylphosphate in water: An application of adaptive umbrella sampling. The Journal of Chemical Physics, 102(1), 419–426.

Authors 2
  1. Richard A. Friedman (first)
  2. Mihaly Mezei (additional)
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Dates
Type When
Created 23 years ago (July 26, 2002, 8:29 a.m.)
Deposited 1 year, 6 months ago (Feb. 10, 2024, 4:01 p.m.)
Indexed 1 year, 2 months ago (June 3, 2024, 8:33 p.m.)
Issued 30 years, 7 months ago (Jan. 1, 1995)
Published 30 years, 7 months ago (Jan. 1, 1995)
Published Print 30 years, 7 months ago (Jan. 1, 1995)
Funders 0

None

@article{Friedman_1995, title={The potentials of mean force of sodium chloride and sodium dimethylphosphate in water: An application of adaptive umbrella sampling}, volume={102}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.469418}, DOI={10.1063/1.469418}, number={1}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Friedman, Richard A. and Mezei, Mihaly}, year={1995}, month=jan, pages={419–426} }