An oxamato bridged trinuclear copper(II) complex: Synthesis, crystal structure, reactivity, DNA binding study and magnetic properties

► An oxamato bridged copper(II) complex [Cu3(pba)(dpa)2(H2O)(ClO4)](ClO4)·H2O (1). ► pbaH4 = 1,3-propanediylbis(oxamic acid), dpa = 2,2′-dipyridylamine. ► Reactions of 1 with dpa and DMF in KOH and structural characterizations. ► Spectroscopic study on the interaction of 1 with CT-DNA and redox behavior of 1. ► The magnetic susceptibility study of complex 1 in the range of 2-300 K.