Abstract: A 1D complex [[Cu₂([12]aneN₃)₂(p-paa)(H₂O)₂](ClO₄)₂[Cu₂([12]aneN₃)₂(p-paa)₂]]_n ([12]aneN₃ = 1,5,9-triazacyclododecane, p-paa = p-benzenebicarboxylate) has been synthesized and structurally characterized. The complex contains two different binuclear copper(II) moieties. One part includes a binuclear copper(II) unit and non-coordinated perchlorate anions. A neutral binuclear copper(II) part which forms a zigzag chain structure via the bridging p-paa ligand completes the unit-cell. Elemental analysis, IR, UV-Vis spectra and magnetic properties for the complex have also been determined. Magnetic susceptibilities in the solid state are measured over the temperature range from 77 to 300 K, showing a weak antiferromagnetic coupling with a best fit J₁ = -3.09 cm^-1, J₂ = -5.279 cm^-1, g = 2.099 and R = 1.226 10^-5.