A systematic development of a polarizable potential of water

Péter T. Kiss, A. Baranyai

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

Based on extensive studies of existing potentials we propose a new molecular model for water. The new model is rigid and contains three Gaussian charges. Contrary to other models, all charges take part in the polarization of the molecule. They are connected by harmonic springs to their gas-phase positions: the negative charge to a prescribed point on the main axis of the molecule; the positive charges to the hydrogens. The mechanical equilibrium between the electrostatic forces and the spring forces determines the polarization of the molecule which is established by iteration at every timestep. The model gives excellent estimates for ambient liquid properties and reasonably good results from high-pressure solids to gas-phase clusters. We present a detailed description of the development of this model and a large number of calculated properties compared to the estimates of the nonpolarizable TIP4P/2005 [J. L. F. Abascal and C. Vega, J. Chem. Phys. 123, 234505 (2005)10.1063/1.2121687], the polarizable GCPM [P. Paricaud, M. Predota, A. A. Chialvo, and P. T. Cummings, J. Chem. Phys. 122, 244511 (2005)10.1063/1.1940033] , and our earlier BKd3 model [P. T. Kiss and A. Baranyai, J. Chem. Phys. 137, 084506 (2012)10.1063/1.4746419]. The best overall performance is shown by the new model.

Original languageEnglish
Article number204507
JournalThe Journal of Chemical Physics
Volume138
Issue number20
DOIs
Publication statusPublished - 2013

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Water
water
Molecules
Gases
Polarization
vapor phases
molecules
Electrostatic force
polarization
estimates
iteration
Hydrogen
electrostatics
harmonics
Liquids
hydrogen
liquids

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

A systematic development of a polarizable potential of water. / Kiss, Péter T.; Baranyai, A.

In: The Journal of Chemical Physics, Vol. 138, No. 20, 204507, 2013.

Research output: Contribution to journalArticle

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