Citation: Chuan Wei YAN, Xiang Qin LIN, Hai Chao LIN, Chu Nan CAO. Axial Coordination Effects of Pyridine on the Electrochemistry of (TPP)Co in 1,2-Dichloroethane Solution[J]. Chinese Chemical Letters, ;1997, 8(10): 905-908. shu

Axial Coordination Effects of Pyridine on the Electrochemistry of (TPP)Co in 1,2-Dichloroethane Solution

a State Key Laboratory for Corrosion and Protection, Institute of Corrosion and Protection of Metals, ChineseAcademy of Sciences, Shenyang 110015;
b Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Received Date: 28 April 1997

The electrochemistry of (TPP)Co in the presence of pyridine was investigated in dichloroethane solution by cyclic voltammetry.With the addition of pyridine to the solution,the reduction peaks of the axial complex compounds, (TPP)Co(Ⅲ)(Py) and (TPP)Co(Ⅲ)(Py)₂ were observed.It was found that the reduction peak of Co(Ⅱ)/Co(Ⅰ) shifted to about-1.20V (SCE) with the increase of added pyridine.The new reduction peak may be attributed to the direct reduction of the axially complex (TPP)Co(Ⅱ)(Py).
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