Nuclear magnetic relaxation study of preferential solvation in diamagnetic electrolyte solutions by use of magnetic ion-solvent interactions
- 1 January 1976
- 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. 72, 1559-1572
- https://doi.org/10.1039/f19767201559
Abstract
Proton magnetic relaxation time measurements are reported in the systems KI + D2O + CD3OD + CD3OH, RbI + D2O + CD3OD + CD3OH, KI + D2O + CD3OD + CD2HOD, RbI + D2O + CD3OD + CD2HOD. The resulting relaxation rates are extrapolated to zero proton concentration. The extrapolation values contain the ion-nucleus proton intermolecular relaxation rates. Apart from magnetic dipole–dipole interaction there seems to be an electronic interaction causing the relaxation mechanism. The experimental results are evaluated so as to yield information regarding preferential solvation. We find no preferential solvation for I– but preferential hydration for Rb+. The requirements of experimental precision render our results as yet preliminary.Keywords
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