摘要
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。
Axial ligation of water-soluble ferroporphyrin Fe(Ⅱ)TM PyP, and its effects on dloxygen activation and reduction were studied usiag spe-ctrophotometry, cyclic voltammetry and RRDE technique. Nitrogenous bases such as imidazole and pyridines can axially ligate Fe(Ⅱ)TMPyP to form six-coordinate complexes, estimation of the stability constants enables the 'effect of axial ligation on redox ability of the metalloporphyrin to be predicted. In the presence of Fe(Ⅱ)TMPyP,dioxygen is reduced to H2O2, which is attributed to the terminal coordination of O2 with Fe(Ⅱ) central ions.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
1989年第2期167-170,共4页
Journal of Xiamen University：Natural Science
基金
国家自然科学基金资助课题
关键词
铁卟啉
轴问配位
光谱法
电化学法
Ferroporphyrin, Axial ligation, Dioxygen activation, Oxygen redaction
