Solvothermal synthesis and characterization of coordination polymers of cobalt(II) and zinc(II) with succinic acid

The complexes [Co(C4H4O4)](n) (1) and [Zn(im)(2)(C4H4O4)](n) (2) (C4H4O4 = 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 A degrees C, and complex 2 is a 1D coordination polymer. In addition, a new synthesis method and some properties of the known [Co(HCOO)(2)center dot 2H(2)O](n) (3) complex are reported. After in situ synthesis of 3 via decomposition of DMF at 140 A degrees C, it was found that complex 3 can adsorb some solvents repeatedly and is selective for H2O.