Solvothermal Synthesis and Characterization of Coordination Polymers of Cobalt(II) and Zinc(II) with Succinic Acid

Abstract

The complexes [Co(C <inf>4</inf>H <inf>4</inf>O <inf>4</inf>)] <inf>n</inf> (1) and [Zn(im)2- (C <inf>4</inf>H <inf>4</inf>O <inf>4</inf>)] <inf>n</inf> (2) (C <inf>4</inf>H <inf>4</inf>O <inf>4</inf> = succinate dianion, suc; im = imidazole) have been synthesized solvothermally and characterized by elemental analysis, IR, TG-DTA, and single-crystal X-ray diffraction techniques. Complex 1 is the first anhydrous member of the cobalt succinate family and has high thermal stability under a static air atmosphere, up to 425 °C, and complex 2 is a 1D coordination polymer. In addition, a new synthesis method and some properties of the known [Co(HCOO) <inf>2</inf>.2H <inf>2</inf>O] <inf>n</inf> (3) complex are reported. After in situ synthesis of 3 via decomposition of DMF at 140 °C, it was found that complex 3 can adsorb some solvents repeatedly and is selective for H <inf>2</inf>O. © Springer Science+Business Media B.V. 2012.