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

Authors

Chuanwei Yan
Haichao Lin

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.

DOI Link

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

Publication Date

1998-11-28

Online Available Date

1998-11-28

Revised Date

1998-11-28

Received Date

1998-11-28

Recommended Citation

Chuanwei Yan, Haichao Lin. Electrochemical Investigation of Effect of Br - on Redox Behavior of (TPP)Co[J]. Journal of Electrochemistry, 1998 , 4(4): Article 2.
DOI: 10.61558/2993-074X.2709
Available at: https://jelectrochem.xmu.edu.cn/journal/vol4/iss4/2

References

1TruxiloLA，DavisDG．Electrochemistryofcobalttetraphenylporphyrininaprotic．Media．Anal．Chem．，1975，47：22602KadishKM，BotomleyLA，BeroizD．Reactionsofpyridinewithaseriesofparasubstitutedtetraphenylporphyrincobaltandironcomplexes．Inorg．Chem．，1978，17：11243KadishKM，LinXQ，HanBC．Chlordebindingreactionsandelectrochemistryof（TPP）C″Oand（TPP）COClindichloromethane．Inorg．Chem．，1987，26：41614刘殿骏，林祥钦．OH－存在下四苯基卟啉合钴氧化过程的电化学和光谱电化学．化学学报，1994，52：235HuY，HanBC，BaoLYetal．Electrochemistryof（octaethylporphinato）cobalt（Ⅱ），（OEP）Co，underacarbonmonoxideatmosphere．electrogenerationandcharacterizationof［（OEP）Co（CO）］－．Inorg．Chem．，1991，30：24446严川伟．在线电化学／气相色谱与钴、镍卟啉的轴向配位和电催化机理研究：［博士学位论文］．长春：中国科学院长春应用化学研究所，19957严川伟，林祥钦．F－的轴向配位对（TPP）Co电化学氧化还原的影响研究．高等学校化学学报，1997，17：2208AdlerAD，LongoFR，KampasFetal．Onthepreparationofmetaloplrphyins．J．Inorg．Nucl．Chem．，1970，32：24439LinXQ，KadishKM．VacuumthinlayerspectroelectrochemicalcelwithadoubletPlatinumGauzeworkingelectrode．Anal．Chem．，1985，57：149810林祥钦，严川伟．中性配体存在下（OEP）Co的电化学和光谱电化学研究．化学学报，1997，55：52111SouzaFD，VilardA，CaemelbeckeEVetal．ElectrochemicalandspectroelectrochemicalbehaviorofCobalt（Ⅲ），Cobalt（Ⅱ）andCobalt（Ⅰ）complexesofmesotetraphenylporphinatebearingbromidesontheβpyrolepositions．Inorg．Chem．，1993，32：4042