二茂铁取代卟啉的合成表征及电化学性质(英文) |
Synthesis, Characterization and Electrochemical Properties of Ferrocenyl-Substituted Free-Base Porphyrins |
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摘要: 通过吡咯与二茂铁甲醛和对甲基苯甲醛的直接交叉缩合反应,合成并成功分离了6个含有0~4个二茂铁取代基的卟啉化合物:5,10,15,20-四(4-甲苯基)卟啉[(CH3Ph)4PH2]、5-(二茂铁基)-10,15,20-三(4-甲苯基)卟啉[Fc(CH3Ph)3PH2]、cis-5,10-二(二茂铁基)-15,20-二(4-甲苯基)卟啉[cis-Fc2(CH3Ph)2PH2]、trans-5,15-二(二茂铁基)-10,20-二(4-甲苯基)卟啉[trans-Fc2(CH3Ph)2PH2]、5,10,15-三(二茂铁基)-20-(4-甲苯基)卟啉[Fc3(CH3Ph)PH2]、5,10,15,20-四(二茂铁基)卟啉[Fc4PH2]。用紫外-可见和红外光谱、核磁共振及质谱等技术对卟啉化合物进行了表征,用微量光谱滴定法测定了化合物在非水溶剂中的质子化反应常数,研究了它们的电化学和光谱电化学性质。结果表明,二茂铁取代基对化合物的光谱及氧化还原电位有较大的影响。 |
关键词: 二茂铁取代卟啉 合成 表征 质子化反应 电化学和光谱电化学 |
基金项目: |
Abstract: Six free-base porphyrins containing 0~4 ferrocenyl substituents were synthesized and successfully isolated from the direct cross-condensation reaction between pyrrole, p-methylbenzaldehyde and ferrocene carboxaldehyde. These porphyrins are represented as (CH3Ph)4PH2, Fc(CH3Ph)3PH2, cis-Fc2(CH3Ph)2PH2, trans- Fc2(CH3Ph)2PH2, Fc3(CH3Ph)PH2 and Fc4PH2, respectively. Each compound was characterized by UV-Vis, FTIR, 1H NMR and mass spectroscopy. The protonation constants of these compounds were determined in non-aqueous solvent by the micro-spectral titration technique. Electrochemical and spectroelectrochemical properties of each porphyrin were also examined. The results indicated that ferrocenyl substituents have a significant effect on the spectra and redox potentials. |
Keywords: Ferrocenyl-substituted porphyrins synthesis characterization protonation reaction electrochemistry and spectroelectrochemistry |
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朱佳丽,张秀风,房媛媛,孙 斌,路桂芬,欧忠平.二茂铁取代卟啉的合成表征及电化学性质(英文)[J].无机化学学报,2013,29(1):199-205. |
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