摘要
本文以现场FT-IR光透薄层光谱电化学方法详细研究了介稳态锰卟啉的红外光诺.结果表明TPPMn(Ⅲ)Cl的1490cm^(-1),1344cm^(-1),1204cm^(-1),1010cm^(-1),806cm^(-1)处吸收峰对中心金属氧化态敏感,随中心金属氧化态降低上述吸收峰向低波数方向移动;而当TPPMn(Ⅲ)Cl失去一个电子形成一价阳离子自由基时,光谱呈现较特殊的变化,在1287cm^(-1)处呈现[TPPMn(Ⅲ)Cl]^+阳离子自由基的特征吸收.
In this paper the infrared spectra of metastable state metalloporphyrin (where the metalloporphyrin is the meso-tetraphenylporphyrinatomanganese (Ⅲ) chloride [TPPMn(Ⅲ)C1] was investigated by in-situ FT-IR spectroelectrochemistry in methylene chloride (CH2C12) and dimethylsulfoxide (DMSO). The results show that the oxidation state sensitive bands of TPPMn(Ⅲ)C1 are 1490cm-1, 1344cm-1, 1204cm-1, 1010cm-1, 806cm-1, and these bands move to low frequency with the centre metal's oxidation state depression. When the TPPMn(Ⅲ)C1 gives one electron loss to form monocation radical of porphyrin, the spectrum displays a special change, the 1287cm-1 peak is the characteristic absorption peak of [TPPMn(Ⅲ)C1]+ monocation radical.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1995年第6期532-537,共6页
Acta Chimica Sinica
基金
国家自然科学基金资助的课题.
