Electrochemical Investigation of Effect of Br^- on Redox Behavior of (TPP)Co

Authors

Chuan-wei YAN, State Key Lab. for Corrosion and Prot., Inst. of Corr. and Prot. of Metals, Chinese Acad. of Sci., Shenyang 110015
Hai-chao LIN, State Key Lab. for Corrosion and Prot., Inst. of Corr. and Prot. of Metals, Chinese Acad. of Sci., Shenyang 110015
Xiang-qin LIN, Dept. of Chem., Univ. of Sci. and Tec. of China, Hefei 230026

Corresponding Author

Chuan-wei YAN

Abstract

The effect of Br^- anion on electrochemical behavior of (TPP)Co was investigated in 1,2 dichloroethane solution by microelectrode and thin layer cyclic voltammetry technique. It was found that the axially coordination of one Br^- anion to (TPP)Co(Ⅲ)(Br^-)₂ shifts the potential of porphyrin system to more positive value. The reduction peak of 0.12 V (vs.SCE) is attributed to the reduction of (TPP)Co(Ⅲ)(Br^-). It is also postulated that the reduction of (TPP)Co(Ⅲ)(Br^-)₂ occurred at a more negative potential where the reduction of the Co(Ⅱ)/Co(Ⅰ) process happened.

Keywords

Tetraphenyporphyrin cobalt, Axial coordination, Bromide anion, Cyclic voltammetry

DOI Link

https://doi.org/10.61558/2993-074X.2709

Publication Date

1998-11-28

Online Available Date

1998-11-28

Revised Date

1998-05-11

Received Date

1997-11-24

Recommended Citation

Chuan-wei YAN, Hai-chao LIN, Xiang-qin LIN. Electrochemical Investigation of Effect of Br^- on Redox Behavior of (TPP)Co[J]. Journal of Electrochemistry, 1998 , 4(4): 388-393.
DOI: 10.61558/2993-074X.2709
Available at: https://jelectrochem.xmu.edu.cn/journal/vol4/iss4/2