Synthesis, characterization, magnetic and electrochemical studies of an asymmetric heterodinuclear macrocyclic complex

A macrocyclic heterodinuclear complex [Cu(II)Mn(II)L(H2O)2](ClO4)2 was synthesized by cyclo-condensation of N,N′-bis(3-formyl-5-n-butylsalicylidene)-ethylenediimine and diethylenetriamine in the presence of Cu2+ and Mn2+. The crystal structure of the complex was determined. Variable-temperature magnetic susceptibilities and cyclic voltammograms of the complex were measured. [Cu(II)Mn(II)L(H2O)2](ClO4)2 displays very strong antiferromagnetic exchange and undergoes a one-electron transfer process.