A dinuclear cobalt(Ⅱ) complex [Co_2(α-furacrylato)_4(Phen)_2(H_2O)].C_2H_5OH has been synthesized with a-furacrylic acid and 1,10-phenanthroline as the ligands, and its crystal structure was determined. The crystal is of monoclinic system, space group C2/c with a = 1.07388(8), β = 2.4300(2), c = 1.86708(14) nm, β = 104.3830(10)°, V = 4.719.4(7) nm~3, D_c = 1.503 g/cm~3, Z = 2, F(000) = 2196, GOOF = 1.053, the final R= 0.0343 and wR = 0.0883. The crystal structure shows that two neighboring cobalt(Ⅱ) ions are linked by the bridging coordin...