Three trinuclear Cu-M-Cu (MÂ =Â Co, Ni and Zn) complexes including macrocyclic oxamido bridge: Synthesis, structures and magnetic properties

Three trinuclear complexes were prepared which includes macrocyclicoxamido bridge. The crystal structures of the three complexes have been determined and the M(II) of the three complexes all exist on the mirror plane. Their magnetic properties were studied by susceptibility versus temperature measurement.