A complex example of electrolytic redox system involving 47 species, 3 electron-active elements and five (3 am-phiprotic + 2 aprotic) co-solvents, is presented. Mixed solvates of the species thus formed are admitted i...A complex example of electrolytic redox system involving 47 species, 3 electron-active elements and five (3 am-phiprotic + 2 aprotic) co-solvents, is presented. Mixed solvates of the species thus formed are admitted in the system considered. It is proved that the Generalized Electron Balance (GEB) in its simplest form obtained according to the Approach II to GEB is identical with the one obtained for aqueous media and binary-solvent system, and is equivalent to the Approach I to GEB.展开更多
By using mixed-solvents method,five kinds of p-substituted tetraphenylporphyrin compounds[T(p-R)PPH_(2),R=NO_(2),Cl,CH_(3),OCH_(3),OH]were synthesized by the condensation of p-substituted benzaldehyde with pyrrole in ...By using mixed-solvents method,five kinds of p-substituted tetraphenylporphyrin compounds[T(p-R)PPH_(2),R=NO_(2),Cl,CH_(3),OCH_(3),OH]were synthesized by the condensation of p-substituted benzaldehyde with pyrrole in mixed solvents(propionic acid,acetic acid and nitrobenzene),and corresponding ferric complexes[T(p-R)PPFe^(Ⅲ)Cl]were synthesized in dimethylformamide.The above free base porphyrins were obtained in 30%-50%yields,metalation yields were up to 90%and total yields of ferric complexes were 27%-50%.Effects of reactive conditions,solvents and oxidants on yields of free base porphyrins were investigated and the relevant mechanism was discussed.Structures of the above porphyrin complexes were characterized by ultravioletvisible(UV-Vis),infrared(IR)and far infrared(FIR)spectroscopy.展开更多
文摘A complex example of electrolytic redox system involving 47 species, 3 electron-active elements and five (3 am-phiprotic + 2 aprotic) co-solvents, is presented. Mixed solvates of the species thus formed are admitted in the system considered. It is proved that the Generalized Electron Balance (GEB) in its simplest form obtained according to the Approach II to GEB is identical with the one obtained for aqueous media and binary-solvent system, and is equivalent to the Approach I to GEB.
基金supported by the Project of the National Natural Science Foundation of China(Grant Nos.20776003,20576005)the Key Project of Natural Science Foundation of Beijing(No.2061001).
文摘By using mixed-solvents method,five kinds of p-substituted tetraphenylporphyrin compounds[T(p-R)PPH_(2),R=NO_(2),Cl,CH_(3),OCH_(3),OH]were synthesized by the condensation of p-substituted benzaldehyde with pyrrole in mixed solvents(propionic acid,acetic acid and nitrobenzene),and corresponding ferric complexes[T(p-R)PPFe^(Ⅲ)Cl]were synthesized in dimethylformamide.The above free base porphyrins were obtained in 30%-50%yields,metalation yields were up to 90%and total yields of ferric complexes were 27%-50%.Effects of reactive conditions,solvents and oxidants on yields of free base porphyrins were investigated and the relevant mechanism was discussed.Structures of the above porphyrin complexes were characterized by ultravioletvisible(UV-Vis),infrared(IR)and far infrared(FIR)spectroscopy.
