A series of metal-organic frameworks constructed with arenesulfonates and 4,4′-bipy ligands

• Published in: Polyhedron 2007-07, Vol.26 (12), p.2647-2654
• Main Authors: Lian, Zhao-Xun, Cai, Jiwen, Chen, Cai-Hong
• Format: Article
• Language: English
• Subjects: 4,4′-Bipy; Arenesulfonates; Coordination chemistry; Crystal structure; Metal–organic framework; Transition metal
• ISSN: 0277-5387
• DOI: 10.1016/j.poly.2007.01.002

Five transition metal compounds containing arenesulfonates and 4,4′-bipy ligands were obtained via hydrothermal or aqueous reactions, and their structures determined by single crystal structural analyses. Five transition metal compounds containing arenesulfonates and 4,4′-bipy ligands, namely [Zn2(N,N′-4,4′-bipy)(N-4,4′-bipy)2(H2O)8](bpds)2·5H2O (1), [Ag2(N,N′-4,4′-bipy)2(bpds)] (2), [Cd(N,N′-4,4′-bipy)(H2O)4]2(4-abs)4·5H2O (3), [Cu(N,N′-4,4′-bipy) (O-bs)2(H2O)2]·4H2O (4), and [Zn(N,N′-4,4′-bipy)2(H2O)2](4,4′-bipy)(bs)2·4H2O (5) (4,4′-bipy=4,4′-bipyridine, bpds=4,4′-biphenyldisulfonate, 4-abs=4-aminobenzenesulfonate, bs=benzenesulfonate), have been synthesized and characterized by X-ray single crystal diffraction, elemental analyses and TG analyses, in order to investigate the coordination chemistry of arenesulfonates and 4,4-bipy, as well as to construct novel coordination frameworks via mixed-ligand strategy. Compounds 2, 4 and 5 could be obtained via hydrothermal or aqueous reactions. Compound 1 forms a binuclear octahedral metal complex. Compounds 2–4 form polymeric chains. Compound 5 consists of 2D square grids with one intercalated 4,4′-bipy molecule. Weak Ag–Ag interactions are observed in compound 2. These complexes show great structural varieties and there are three different coordination modes observed for both the 4,4′-bipy and the sulfonate ligands.