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作 者:朱佳丽[1] 张秀风[1] 房媛媛[1] 孙斌[1] 路桂芬[1] 欧忠平[1]
出 处:《无机化学学报》2013年第1期199-205,共7页Chinese Journal of Inorganic Chemistry
基 金:国家自然科学基金(No.21071067,21001054)资助项目
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(CH,Ph)3PH2]、c/s-5,10-(-茂铁基)-15,20-二f4-甲苯基)卟啉[cis—Fez(CH,Ph),H21、trans-5,15-二(二茂铁基)-10,20.二(4-甲苯基)卟啉[trans—Fcz(CH3Ph)2PH2]、5,10,15.三(二茂铁基)-20.(4-甲苯基)卟啉[Fc,(CH3Ph)PH2]、5,10,15,20-四(二茂铁基)卟啉[Fc4PH2]。用紫外一可见和红外光谱、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。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-Fcz(CH3Ph)2PH2, Fc3(CH3Ph)PHz and Fe,PH2, 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.
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