Structural characterization of several cadmium halides with N-donor ligands

摘要

Five cadmium halides with N-donor ligands were synthesized tinder 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 center dot center dot center dot 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)(2)CdI4] (phen = phenanthroline) (4) consists of a trigonal bipyramidal Cu(II) center and a tetrahedral Cd(II) center linked by a mu(2)-I bridge. The ionic [Co(dien)(2)][CdI4] (dien = diethylenetriamine) (5) comprises an octahedral CoN62+ cation and a tetrahedral CdI42- anion. (c) 2006 Elsevier B.V. All rights reserved.