Cyclic and Square Wave Voltametric Studies of Mn(II) and Co(II) Dithiocarbamate Complexes

摘要

The cyclic and square wave voltammetry of Mn(II) and Co(II) dithiocarbamate complexes have beeninvestigated. The data obtained indicated one or two redox couple(s), with each redox couple associatedwith a sequential single electron transfer corresponding to metal center quasi-reversible redox processes.The Manganese(II) complexes (1 and 3) exhibited two redox couples in the range -0.4 to 0.6 V, the twooxidations and the corresponding reductions are assigned to MnII/MnIII and MnIII/MnIV redox processes.The cobalt(II) complexes (2 and 4) showed a single redox couple in the range 0.52 to 1.12 V, assignedto metal center one-electron quasi-reversible Co(II)/(III) and Co(III)/(II) oxidation and reductionrespectively. The linear relationship of the plot of Ip, a vs ν1/2 (Randles-Sevcik plot) suggested a diffusioncontrolled behaviour of all the complexes..