Influence of Acido Ligands on the Structure of Copper Dihalide Solvates with Dimethyl Sulfoxide and N,N-Dimethylformamide

Structures of copper dihalide solvates with dimethyl sulfoxide (DMSO) and N,N-dimethylformamide (DMF) were determined by XRD single crystal analysis. The existence of two DMSO solvates with CuBr(2), but only one with CuCl(2), was attributed to a lower Cu-Br bond strength in comparison with Cu-Cl, and, as a consequence, by its easier breaking to form a bond with a solvent molecule. Fundamentally different structures of CuX(2)center dot 2DMF (X = Br, Cl) solvates are caused by different donor power of the acido ligands. DOI: 10.1134/S1070363211090064