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Issue 13, 2015
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Long-range ion–water and ion–ion interactions in aqueous solutions

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Abstract

Using small-angle X-ray scattering (SAXS), we obtained direct experimental evidence on the structure of hydrated polyatomic anions, with hydration effects starkly different from those of cations (J. Chem. Phys., 2011, 134, 064513). We propose that the size and charge density of the naked ions do not sufficiently account for the differences in the SAXS curves. For cations, the ion–ion contribution gives a prominent first-order diffraction peak, whereas for anions, the low-Q enhancement in the SAXS curves indicates density inhomogeneities as a result of ion–water interactions.

Graphical abstract: Long-range ion–water and ion–ion interactions in aqueous solutions

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Article information


Submitted
19 Oct 2014
Accepted
15 Jan 2015
First published
15 Jan 2015

Phys. Chem. Chem. Phys., 2015,17, 8427-8430
Article type
Paper
Author version available

Long-range ion–water and ion–ion interactions in aqueous solutions

C. Chen, C. Huang, I. Waluyo, T. Weiss, L. G. M. Pettersson and A. Nilsson, Phys. Chem. Chem. Phys., 2015, 17, 8427
DOI: 10.1039/C4CP04759A

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