Solubility of Copper(II) Chloride in Mixed Organic Oxygen-Containing Solvents
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Solubility of copper(II) chloride at 25°C in binary organic solvents consisting of dimethyl sulfoxide, N,N-dimethylacetamide, and 1,4-dioxane was determined by the isothermal saturation method. The shape of solubility isotherms for all ternary systems under study is connected with the structural type of formed copper chloride solvates, the composition of which is defined by the solvent donor number. Solvates crystallize predominantly, where the metal ion coordinates molecules of the solvent with a greater donor power. The temperature increase in the system CuCl2–dimethylacetamide–dioxane up to 50°C leads to the formation of the cluster compound [Cu4Cl6O(DMA)4]; its structure was determined by the X-ray structural analysis method.
Keywordsphase equilibria copper chloride N,N-dimethylacetamide dimethyl sulfoxide 1,4-dioxane copper clusters
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This work was financially supported by the Russian Foundation for basic research (project no. 15-03- 05139). The equipment of the St. Petersburg State University Research Center “X-ray diffraction research methods” was used.
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