Kinetic Study on Electrochemical Oxidation of Alkyl Cobalt Schiff Base Complexes RCo(Salen)

Abstract

Abstract: In this paper, the behavior of electrooxidative kinetic process of RCo(Salen)in DMF-TBAPsolution has been studied by cyclic voltammetry, chronoamperometry, linear sweep voltammetry, and lgi-Etechniques on micro gold wheel electrode. The kinetic parameters ks, n₁, n₂, D, a and kf have been obtained. The results showed that the oxidation of RCo(Salen) is an one electron transfer process coupled with chemical dissociation in which the dissociative product undergoes a second one electron transfer oxidation at the same potential to the initial electron transfer reaction. So, the overall oxidative process can best be described as ECEmechanism, The effect of alkyl group Ron E⁰ and k_f is remarkable. E⁰ decreases in the order of CH₃→C₂H₅→n-C₄H₉→i-C₄H₉. In the meantime, k_f changes just in the opposite way.

Key words: Alkyl cobalt Schiff base complexes, Cyclic voltammetry, Linear sweep voltammetry, Chronoamperometry, Kinetic parameters

TrendMD:

ZHU Shi-Min, ZHANG Tian-Yi. Kinetic Study on Electrochemical Oxidation of Alkyl Cobalt Schiff Base Complexes RCo(Salen)[J]. Chem. J. Chinese Universities, 1994, 15(11): 1607.

References

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