One novel coordination polymer {[Co(4,4'-bipy)(C9H 8O3N)2](H2O)4} n with p-acetamidobenzoic acid and 4,4'-bipy has been synthesized. It was characterized as crystallizing in the triclinic space group P1, with: a=1.138 1(2) nm, b = 1.165 2(2) nm, c=1.223 3(2) nm, α=88.47(3)°, β=88.00(3)°, γ=65.78(3)°, B=1.4784(4) nm3, D c=1.446 g·cm-3, Z=1, F(000)=670. Final GooF=1.106, R1=0.041 5, wR2=0.110 4. The crystal structure shows that the cobalt(II) ion is lined with one 4,4'-bipy molecule, forming a one-dimension chain with Z-type structure, whi...