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利用分光光度法、循环伏安法和旋转环盘电极研究水溶性的中位-四-(N-甲基吡啶基)卟啉亚铁配合物(Fe(Ⅱ)TMPyP)的轴向配位作用及其对双氧的活化还原作用,咪唑、吡啶和γ-甲基吡啶等含氮有机碱能与Fe(Ⅱ)TMPyP进行轴电配位生成六配位化合物,通过测定它们的稳定常数,预示了轴向配位对铁卟啉氧化还原能力的影响,Fe(Ⅱ)TMPyP使氧还原为H_2O_2,归因于O_2以端基配位的形式同Fe(Ⅱ)中心离子作用。
Study on Axial Coordination of Water-Soluble Fe (Ⅳ) -tetrakis (N-methylpyridinato) Porphyrin Complex (Fe (Ⅱ) TMPyP) by Spectrophotometry, Cyclic Voltammetry and Rotating Ring Disc Electrode And their activation and reduction of dioxygen. The nitrogen-containing organic bases such as imidazole, pyridine and γ-picoline can coordinate with Fe (Ⅱ) TMPyP to generate hexacoordinated compounds. By measuring their stability constants, The effect of axial coordination on the redox capacity of iron porphyrins was studied. The reduction of oxygen to H_2O_2 by Fe (Ⅱ) TMPyP was attributed to the interaction of O_2 with Fe (Ⅱ) as the terminal coordination form.