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合成了三(2-苯并咪唑甲基)胺(ntb)为配体的单核铁(Ⅲ)配合物[Fe(ntb)Cl2]Cl.THF.H2O,对配合物进行了IR、UV-vis和元素分析等表征.通过单晶X-射线衍射确定了其晶体结构,配合物阳离子含有一个中心金属Fe(Ⅲ)离子,与一个烷基胺氮、三个苯并咪唑氮和两个氯离子配位,形成畸变八面体构型.配合物分子和外界阴离子以及溶剂分子之间通过氢键作用形成三维网络结构.用循环伏安法研究了配合物的电化学性质,在0.8～-0.8V(vs.SCE)电位扫描范围内,配合物呈准可逆的氧化还原行为.在pH 8.2和40℃的条件下,以邻苯二酚为底物,研究了配合物的拟多酚氧化酶活性,结果表明,配合物催化邻苯二酚氧化呈准一级动力学反应,其速率常数为0.32min-1.
The complex of mononuclear iron (Ⅲ) [Fe (ntb) Cl2] Cl.THF.H2O with tris (2-benzimidazolylmethyl) amine (ntb) Vis and elemental analysis, etc. The crystal structure was confirmed by single crystal X-ray diffraction. The complex cation contained one central metal Fe (Ⅲ) ion, one alkylamine nitrogen, three benzimidazole nitrogen and two chlorine Ion coordination to form a distorted octahedral configuration.The three-dimensional network structure was formed by the hydrogen bonding between the complex molecule and the external anion and the solvent molecule.The electrochemical properties of the complex were studied by cyclic voltammetry at 0.8 ~ -0.8 V (vs.SCE), the quasi-reversible redox behavior of the complex was investigated.When the pyrocatechol was used as the substrate, the complex polyphenol oxidase The results showed that the complex catalyzed catechol oxidation was quasi-first-order kinetic reaction, the rate constant was 0.32min-1.