Research & Faculty

Default Header Image

How Much Weaker Are the Effects of Cations than Those of Anions? The Effects of K+ and Cs+ on the Molecular Organization of Liquid H2O

TitleHow Much Weaker Are the Effects of Cations than Those of Anions? The Effects of K+ and Cs+ on the Molecular Organization of Liquid H2O
Publication TypeJournal Article
Year of Publication2014
AuthorsMorita, T, Westh, P, Nishikawa, K, Koga, Y
JournalJOURNAL OF PHYSICAL CHEMISTRY B
Volume118
Pagination8744-8749
Date PublishedJUL 24
ISSN1520-6106
Abstract

We characterized the effects of K+ and Cs+ ions on the molecular organization of H2O by the I-propanol probing methodology, previously developed by us (Phys. Chem. Chem. Phys. 2013, IS, 14548). The results indicated that both ions belong to the class of ``hydration center{''}, which is hydrated by 4.6 +/- 0.8 and 1.1 +/- 0.5 H2O molecules, respectively, and leave the bulk H2O away from hydration shells unperturbed. Together with our previous results for the total of 7 cations and 11 anions, we display resulting characterization on a 2-D map and show a quantitative difference in their strength of the effects on H2O between anions and cations.

DOI10.1021/jp504245c