AI Article Synopsis
- The study investigates how the hydrogen-bond network in water is affected by varying concentrations of LiCl using X-ray Raman scattering (XRS) spectroscopy.
- The researchers observed systematic changes in XRS spectral features at low concentrations, with changes stabilizing around 11 mol/kg, indicating a gradual breakdown of the hydrogen-bond network.
- It suggests that LiCl ions primarily influence water structure within their immediate hydration shell, supported by additional computational methods like density-functional theory and molecular dynamics simulations.
Article Abstract
We report a study on the hydrogen-bond network of water in aqueous LiCl solutions using X-ray Raman scattering (XRS) spectroscopy. A wide concentration range of 0-17 mol/kg was covered. We find that the XRS spectral features change systematically at low concentrations and saturate at 11 mol/kg. This behavior suggests a gradual destruction in the hydrogen-bond network until the saturation concentration. The surprisingly large concentration required for the saturation supports an interpretation in which the ions affect the structure of water only within their first hydration shell. The study is complemented by density-functional-theory calculations and molecular dynamics simulations.
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| http://dx.doi.org/10.1021/jp409528r | DOI Listing |
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