Synthesis, crystal structure and catalytic behavior of homo- and heteronuclear coordination polymers [M(tdc)(bpy)] (M~(2+) = Fe ~(2+), Co~(2+), Zn~(2+), Cd~(2+); Tdc ~~(2-) = 2,5-thiophenedicarboxylate)

摘要

A series of isostructural 3D coordination polymers ~3 _∞[M(tdc)(bpy)] (M~(2+) = Zn~(2+), Cd ~(2+), Co~(2+), Fe~(2+); tdc~~(2-) = 2,5-thiophenedicarboxylate; bpy = 4,4′-bipyridine) was synthesized and characterized by X-ray diffraction, thermal analysis, and gas adsorption measurements. The materials show high thermal stability up to approximately 400 C and a solvent induced phase transition. Single crystal X-ray structure determination was successfully performed for all compounds after the phase transition. In the zinc-based coordination polymer, various amounts of a second type of metal ions such as Co~(2+) or Fe~(2+) could be incorporated. Furthermore, the catalytic behavior of the homo- and heteronuclear 3D coordination polymers in an oxidation model reaction was investigated.