氯离子存在下四苯基卟啉合锰的电化学和现场光谱电化学 Ⅰ.还原过程  

Electrochemical and In-situ Spectroelectrochemical Study of (Tetraphenylporphinato) manganese (Ⅲ) Perchlorate in the Presence of Chloride Anions Ⅰ. Reduction Processes

作　　者：李志丽[1] 林祥钦[1] 

机构地区：[1]中国科学院长春应用化学研究所电分析化学开放研究实验室,长春130022

出　　处：《化学学报》1992年第10期948-952,共5页Acta Chimica Sinica

基　　金：国家自然科学基金

摘　　要：在二氯乙烷溶液中,研究了氯离子存在下四苯基卟啉合锰,(TPP)Mn(III)ClO_■,各步电极氧化还原的过程机理,证明了Mn(II),Mn(III)中心都只与一个Cl^-配位,其结果使锰卟啉中心金属Mn(III)/Mn(II)的半波电位负移约100mV,测定了Cl^-与Mn(III)中心的配位反应的平衡常数为2.2×10~4.The mechanism of electrochemical redox reactions of (tetra-phenylporphinato) managanese (Ⅲ) perchlorate, (TPP)Mn(Ⅲ)ClO_4, was studied in the presence of chloride anions in dichloroethane solution. It was demonstrated that Mn(Ⅱ) or Mn (Ⅲ) centre can be coordinated with only one chloride anion, this result makes an about 100 mV negative shift of half-wave potential of Mn (Ⅲ)/Mn(Ⅱ) reduction. An equilibrium constant of 2.2×10~4 was determined for the complexation reaction of Cl-and Mn (Ⅲ) centre.

关 键 词：光谱 电化学 锰卟啉 氯离子 

分 类 号：O614.711[理学—无机化学]