The thermal behaviour of some Cu(II) compounds formed with 1,4-disubstituted piperazine derivatives has been studied. The
investigations were performed on a MOM 1500 derivatograph. The endothermic effects observed at 170–180°C are associated with
the processes of dehydration and dehalogenation of the compounds, with general formula LH2·CuCl4·H2O, whereL is the piperazine derivative. The residue at 600°C remains relatively constant.