@article { ISI:000339540600031, title = {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}, journal = {JOURNAL OF PHYSICAL CHEMISTRY B}, volume = {118}, number = {29}, year = {2014}, month = {JUL 24}, pages = {8744-8749}, 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 {\textquoteleft}{\textquoteleft}hydration center{{\textquoteright}{\textquoteright}}, 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.}, issn = {1520-6106}, doi = {10.1021/jp504245c}, author = {Morita, Takeshi and Westh, Peter and Nishikawa, Keiko and Koga, Yoshikata} }