Abstract
Abstract This paper investigates the reduction kinetics and mechanism of Pd(II)–ethylenediamine with cyclic voltammetry and normal pulse polarography techniques. The results indicate that the reduction is an irreversible process. The major kinetic parameters and diffusion coefficients of Pd(II)–ethylenediamine and other Pd(II)–aliphatic diamine complexes are reported. The influences of concentrations, pH values, and ligand structures on the reduction of Pd(II) complex are also discussed. The electrochemical reaction orders with respect to ethylenediamine and Pd(II)–ethylenediamine are found to be 0 and 1, respectively and these reaction orders demonstrate an undissociated complex reduction mechanism. Finally the iodide effect on normal pulse polarography is studied. The increase in current when iodide is added implies that the reduction is via the outer sphere path way.
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