Rerefinement of poly[[[μ-2,3-di-4-pyridylbutane-2,3-diol-κ2N:N′]-μ-iodido-copper(I)] dimethyl sulfoxide solvate] as an anhydrous honeycomb structure

Abstract

The crystal structure of the title compound, {[CuI(C14H16N2O2)]·C2H6OS}n, consists of (2,3-di-4-pyridylbutane-2,3-diol)iodidocopper(I) units that are connected through Cu—N and Cu—I bonds into a flat honeycomb motif. The dimethyl sulfoxide (DMSO) mol­ecules occupy the spaces within the layer and are hydrogen-bonded to it. The iodide ligand lies on a special position of site symmetry m, the Cu atom on a special position of site symmetry 2, and the ligand about a centre of inversion. The DMSO solvent is disordered about a special position of site symmetry m. The structure has been re-refined as an anhydrous structure from the diffraction data of Niu, Song, Wang, Guo, Zhu & Hou [Chem. Lett (2006), pp. 650–651], who described the structure as a methanol and 0.25-water solvate.