Synthesis, Characterization and Electrochemical Study of La(III) Complex With Polypyrydyl Ligands

One group of novel complexes,{[La(bipy)]2.(phen-dione)(dca)}(NO3)5.6(H2O) have been synthesized. Dark green crystals of {[La(bipy)]2.(phen-dione)(dca)}(NO3)5.6(H2O) were formed into an acetonitrile solution. This complex contained water molecule (the amounts of which were determined by CHN analysis). The complex was characterized by elemntal analysis, FT-IR, electronic absorption spectroscopies, 1H-NMR and Cyclic voltammetry. The electrchemical properties of the complex were studied by Cyclic voltammetry. Cyclic voltammetry study of this complex, showed three pairs of peaks in the negative region and one pairs of peaks in the positive region which were assigned to the consecutive reduction of phen-dione and bipy ligands and other quasi-reversible reduction couple is assigned to the reduction of La(III) centers.