Structural characterization of several cadmium halides with N-donor ligands

Five cadmium halides with N-donor ligands were synthesized under the hydrothermal conditions and characterized by X-ray single-crystal diffraction. The isostructural [CdX2(2,2′-bpy)] (X = I 1, Br 2, bpy = bipyridine) (1) possess 3-D supramolecular network structures based on 1-D zigzag-type CdX2 chains extended by bpy molecules via non-covalent C–H⋯X hydrogen-bonded interactions. The 3-D porous [CdBr2(pip)] (pip = piperazine) (3) is formed through a linkage of 1-D zigzag-type CdBr2 chains by pip bridges. The heteronuclear dimetal–iodo cluster [Cu(phen)2CdI4] (phen = phenanthroline) (4) consists of a trigonal bipyramidal Cu(II) center and a tetrahedral Cd(II) center linked by a μ2–I bridge. The ionic [Co(dien)2][CdI4] (dien = diethylenetriamine) (5) comprises an octahedral View the MathML source