Nuclear magnetic relaxation studies of preferential solvation in electrolyte solutions. Indirect method using only solvent–solvent magnetic interactions
- 1 January 1978
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 74, 1834-1848
- https://doi.org/10.1039/f19787401834
Abstract
Formulae are derived which describe the increase in the total proton magnetic relaxation rate relative to the intramolecular relaxation rate in a solvent mixture when solvent molecules of one kind are enriched in the solvation sphere of a dissolved ion. Experimental nuclear magnetic relaxation results regarding the application of these formulae for solutions of Mg(ClO4)2, KI and RbI in water + methanol mixtures are reported. It is shown that preferential solvation effects are present in these systems, they are ascribed to preferential hydration of the cations.Keywords
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