Synthesis and Crystal Structure of a Coordination Polymer {[Co(phth)(phen)(H_2O)]·(C_2H_5OH)}_n

The coordination polymer {[Co(phth)(phen)(H2O)]·(C2H5OH)}n (phth = phthala- te, phen = 1,10-phenanthroline) with formula C22H20CoN2O6 (Mr = 467.33) was synthesized by the solvothermal method under low temperature, and its crystal structure was determined by single- crystal X-ray diffraction. The complex belongs to monoclinic system, space group P21/n with a = 12.7352(16), b = 8.8125(11), c = 18.677(2) , β = 102.633(2)o, V = 2045.3(4) 3, Z = 4, Dc = 1.518 g/cm3, μ = 0.882 mm-1, F(000) = 964, S = 1.053, the final R = 0.0401 and wR = 0.0984 for 3135 observed reflections (I 2σ(I)). Single-crystal X-ray analysis revealed that the Co(II) ion is six-coordinated. The cobalt complex forms a one-dimensional chain structure via phthalate bri- dging ligand. In the cobalt complex, a 3D network structure is formed by π-π stacking interaction of 1,10-phenanthroline as well as intermolecular hydrogen bonding interactions.