One dimensional chain cobalt coordination polymer has been synthesized with malie acid and cobalt(II) chloride anhydrous, and characterized by the element analysis, IR, TGA and single crystal X-ray diffraction structure analysis. The title complex crystallizes in monoclinic system with space group P2 1, a=0.575 61(9) nm, b= 0.905 86(14) nm, c=0.841 02(13) nm, β=105.350(2) °; V =0.422 88(11) nm 3, Z=2, D c, =1.924 Mg•m -3, μ=2.044 mm -1, F(000)=250, and final R 1=0.029 3, wR 2=0.074 2. The crystal structure shows that the cobalt ion is coord...