A cobalt coordination polymers [Co(dib)(SO 4) (1) was obtained by solvothermal assembly of CoSO 4·7H 2O with sodium formate in the presence of N-donor ligands, namely 1,4-di(1-imidazolyl) benzene (dib). Compound 1 crystallizes in monoclinic system, space group C2/ c with a=1.972 26(7) nm, b=0.977 0(3) nm, c=1.1839 6(4) nm, β=96.479(2)°, V=2.266 8(13) nm 3, Z=4, C 24H 20N 8CoO 4S, M r=575.47, D c=1.686 g·cm -3, μ=0.903 mm -1, F(000)=1 180, R int=0.018 3, R=0.024 6, wR=0.072 6. Single-crystal X-ray diffraction analysis revealed that each dib...