NMR relaxation study of water molecules in concentrated zinc chloride solutions

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Abstract
The proton spin-lattice relaxation time and self-diffusion coefficient of water in concentrated aqueous ZnCl2 solutions have been measured as a function of salt concentration and temperatures. The intermolecular and intramolecular contributions of the dipolar interactions to the relaxation rate were determined separately with the aid of the self-diffusion data. The present data indicate that the translational motion of water molecules in ZnCl2 solutions is retarded more significantly than their rotational motion with decreasing water content.