Abstract: | In the title dinuclear CuII compound, [Cu2Cl3(C19H19N3)3]ClO4·0.5H2O, the coordination geometry around the Cu atoms is square pyramidal, with the bridging Cl atom at the apical positions. The Cu—Cl—Cu angle is 136.9 (1)° and the Cu?Cu distance is 4.961 (1) Å. |