X-ray diffraction study of CaBr2 aqueous solutions

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Abstract
CaBr2 aqueous solutions were investigated by x‐ray diffraction in order to study the structure of hydrated ions. The experimental data were analyzed using a model describing coordinations around the ions only in terms of nearest‐neighbor interactions. For the Br− ion, the octahedral coordination, already obtained in LiBr solutions, is confirmed. As regards the coordination of Ca++ ion, the experimental data can be interpreted both with six and eight coordination numbers.