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The tridentate ligand DPA-Me(2) was readily prepared from DPA(DPA = 2,2-dipicolylamine) in high yield. The mixture of 2 and Cu(Cl O4)26H2O in methanol gave a five-coordinated mononuclear complex [(DPA-Me)Cu(Me CN)(Cl O4)](Cl O4)(3). Recrystallization of 3