Abstract This study presents the synthesis, structural characterization and magnetic properties of a one-dimensional coordination polymer composed of copper(II) chloride and 1H-1,2,4-triazole. Crystals of the coordination polymer were synthesized in hydrochloric acid at room temperature. Single crystal X-ray diffraction reveals an array of copper atoms bridged by two chloride ions and a triazole ligand. Magnetization data on a single crystal show no hysteresis but deviate from the curves derived