Substitution Reactions of Beryllium (II) Ion in Mixed Solvents. II. Solvent Exchange between the Inner Solvation Shell and the Bulk in Dimethyl Sulphoxide and Dimethyl Sulphoxide/Water Mixtures
- 1 May 1978
- journal article
- research article
- Published by Wiley in Berichte der Bunsengesellschaft für physikalische Chemie
- Vol. 82 (5) , 499-503
- https://doi.org/10.1002/bbpc.197800093
Abstract
Proton magnetic resonance spectra of Be(NO3)2 solutions in mixtures of water and dimethylsulphoxide (DMSO) have been measured at different solvent compositions and temperatures at 270 MHz. The relative amounts of the solvated species Be(OH2)i(DMSO)4−i have been determined. The total solvation number was 4. The kinetics of solvent exchange has been studied in DMSO. The proton exchange in pure aqueous solutions may be explained in terms of a protolysis reaction. The solvent molecule preferentially solvating the beryllium ion is DMSO in water rich solutions and water in DMSO rich solutions.Keywords
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