Cooperativity in Ion Hydration

Despite prolonged scientific efforts to unravel the effects of ions on the structure and dynamics of water, many open questions remain, in particular concerning the spatial extent of this effect (i.e., the number of water molecules affected) and the origin of ion-specific effects. A combined teraher...

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Bibliographic Details
Published inScience (American Association for the Advancement of Science) Vol. 328; no. 5981; pp. 1006 - 1009
Main Authors Tielrooij, K.J, Garcia-Araez, N, Bonn, M, Bakker, H.J
Format Journal Article
LanguageEnglish
Published United States American Association for the Advancement of Science 21.05.2010
The American Association for the Advancement of Science
Subjects
Anions
Anisotropy
Cations
Chlorides
Dynamics
Ions
Lithium
Magnesium
Molecular chemistry
Molecular structure
Molecules
Retraining
Salts
Sodium
Solvation
Spectroscopy
Spectrum analysis
Sulfates
Water
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Summary:Despite prolonged scientific efforts to unravel the effects of ions on the structure and dynamics of water, many open questions remain, in particular concerning the spatial extent of this effect (i.e., the number of water molecules affected) and the origin of ion-specific effects. A combined terahertz and femtosecond infrared spectroscopic study of water dynamics around different ions (specifically magnesium, lithium, sodium, and cesium cations, as well as sulfate, chloride, iodide, and perchlorate anions) reveals that the effect of ions and counterions on water can be strongly interdependent and nonadditive, and in certain cases extends well beyond the first solvation shell of water molecules directly surrounding the ion.
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ISSN:0036-8075
1095-9203
DOI:10.1126/science.1183512