Composition of the first coordination sphere of Ni2+ in concentrated aqueous NiCl2 and NiBr2 solutions. Part 2.—Application of halide nuclear magnetic relaxation
- 1 January 1979
- 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. 75, 2712-2734
- https://doi.org/10.1039/f19797502712
Abstract
35 Cl, 37Cl, 81Br and 79Br longitudinal and transverse magnetic relaxation rates in aqueous NiX2(X = Cl, Br) solutions in the concentration range 0 ⩽c⩽ 2.5 mol kg–1 are reported. They are given at various temperatures and at various frequencies. Chemical shift data of the 35Cl magnetic resonance as a function of the temperature are also reported. Finally, MgX2 and CaX2 solutions were also measured to serve as a standard for diamagnetic electrolyte solutions. Applying the Swift–Connick exchange analysis the occurrence probabilities and life times of the halide ions in the first coordination sphere of Ni2+ are determined. Mechanisms of a partly three-site nature are discussed and the mode of application is analysed.Keywords
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