Long-range ion-water and ion-ion interactions in aqueous solutions
2015 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 17, no 13, 8427-8430 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2015. Vol. 17, no 13, 8427-8430 p.
Chemical Sciences Physical Sciences
IdentifiersURN: urn:nbn:se:su:diva-117065DOI: 10.1039/c4cp04759aISI: 000351677600014PubMedID: 25628145OAI: oai:DiVA.org:su-117065DiVA: diva2:810139