Halide and sodium ion parameters for modeling aqueous solutions in TIP5P-Ew water

Ivan Gladich*, Paul Shepson, Igal Szleifer, Marcelo Carignano

*Corresponding author for this work

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

We present new Lennard-Jones parameters for the halide ions Cl-, Br- and I- and for the alkali ion Na+, to be used in combination with the TIP5P-Ew water model. Molecular dynamics simulations and thermodynamics integration are used to obtain one set of parameters to reproduce the experimental hydration free energy, the ion-oxygen coordination number and the structure of the solvation layer. The reported parameters reproduce the experimental hydration free energies within the numerical uncertainty of the simulations and their prediction of structural quantities are in good agreement with experimental results. The diffusion coefficients are calculated as a further test: the obtained parameters provide a reasonable prediction of experimental diffusion coefficients.

Original languageEnglish (US)
Pages (from-to)113-117
Number of pages5
JournalChemical Physics Letters
Volume489
Issue number1-3
DOIs
StatePublished - Apr 1 2010

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Halide and sodium ion parameters for modeling aqueous solutions in TIP5P-Ew water'. Together they form a unique fingerprint.

  • Cite this