Two novel coordination polymers, {[CuL2(H2O)2]X2}n, with L = ethane-1,2-diyl bis(pyridine-3-carboxylate) and X = ClO4 ; NO3 have been prepared by self-assembly of Cu(II) salts with L in THF/H2O system. The IR, TGA, and the reflectance spectra in the solid state have been recorded, and both complexes were structurally characterized by X-ray crystallography confirming that the complexes are one-dimensional coordination isotypic polymers, and L acts in a 2-N,N-bidentate fashion to link Cu(II) cations to form a double-stranded chain along [001]. The main structural motifs difference between both compounds is related to supramolecular self-assembly.