Synthesis and Crystal Structure of Co(DMSO)_2(H_2O)_2(SCN)_2 with One-dimensional Hydrogen-bonded Structure (DMSO = Dimethylsulfoxide)

摘要

The title complex Co(DMSO)_2(H_2O)_2(SCN)_2 has been prepared and structurally characterized. It crystallizes in monoclinic, space group P2_1 with a = 5.1981(9), b = 11.944(2), c = 12.646(2) A, β = 98.686(2)°, Ⅴ = 776.2(2) A~3 C_6H_(16)CoN_2O_4S_4, M_r = 367.38, Z = 2, D_c= 1.572 g/cm~3, F(000) = 378 and μ(MoKa) = 1.646 mm~(-1). The structure was refined to R = 0.0232 and wR = 0.0645 for 1241 observed reflections with Ⅰ > 2σ(Ⅰ). In the title complex, each Co(Ⅱ) atom is octahedrally coordinated by four O atoms from two DMSO ligands and two water molecules as well as two N atoms from SCN~- ions. The title molecules are connected to each other through intermolecular hydrogen bonds to form a 1-D structure extended by eight-membered Co_2O_4H_2 rings.