Chloro-complexes formation in a ZnCl2–CdCl2 aqueous solution: An x-ray diffraction study
- 1 May 1983
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 78 (9) , 5745-5749
- https://doi.org/10.1063/1.445457
Abstract
A solution containing 1 mol/l of ZnCl2 and CdCl2 was examined by x‐ray diffraction in order to study the mean environments of the two cations. The results were compared with those obtained from two solutions in which the same salts were separately dissolved. Zn2+ ions turned out to be hexa‐coordinated both in the single and the mixed solution, the coordination shell being composed of about five water molecules and one Cl− ion. On the other hand, Cd2+ ions, which in the CdCl2solution are nearly hexa‐coordinated, become tetra‐coordinated, in the mixed solution. This transition is accompanied by a significant increase of the Cd2+–Cl− complexation degree.Keywords
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