Ion clusters and ion-water potentials in MD-simulations

A well known, if little documented, problem in many molecular simulations of aqueous ionic solutions at finite concentrations is that unrealistic cation-cation associations are frequently found. One might suspect a defect in the ion-ion interaction potentials, about which not much is known. However,...

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Bibliographic Details
Date:2012
Main Authors: Bopp, Ph.A., Ibuki, K.
Format: Article
Language:English
Published: Інститут фізики конденсованих систем НАН України 2012
Series:Condensed Matter Physics
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/120269
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Ion clusters and ion-water potentials in MD-simulations / Ph.A. Bopp, K. Ibuki // Condensed Matter Physics. — 2012. — Т. 15, № 2. — С. 23001:1-11. — Бібліогр.: 19 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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Summary:A well known, if little documented, problem in many molecular simulations of aqueous ionic solutions at finite concentrations is that unrealistic cation-cation associations are frequently found. One might suspect a defect in the ion-ion interaction potentials, about which not much is known. However, we show that this phenomenon can also be traced to the fact that, in the pair-potential approximation, the cation-water potentials are too deep compared with the other ones and we investigate this phenomenon in some detail. We then attempt to draw some general conclusions.