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三乙烯四胺-咪唑的非对称异双核配合物的合成及电化学性质
Synthesis and Electrochemical Properties of Cu(Ⅱ)-Zn(Ⅱ) Asymmetric Heterobinuclear Complex Donated by Triethylenetetraamine
【摘要】 合成了三乙烯四胺(trien)和咪唑为配体的二个铜(Ⅱ)单核配合物[(trien)Cu](C lO4)2、[(trien)CuimH](C lO4)2和1个非对称性的咪唑桥联铜锌异双核配合物[(trien)Cu im Zn(tren)](C lO4)3,用元素分析、摩尔电导、反射光谱及磁化率测定对配合物的组成和结构进行了表征。采用循环伏安法分别研究了配合物在乙腈和水溶液中的电化学性质,研究表明:Zn(Ⅱ)能通过咪唑桥改变Cu(Ⅱ)接受电子的能力。在水溶液中咪唑桥异双核配合物很不稳定,全部从Zn(Ⅱ)端断裂。
【Abstract】 Two mononuclear complexes,namely [(trien)Cu](ClO4)2 and [(trien)Cu imH](ClO4)2 and one Cu(Ⅱ)-Zn(Ⅱ) asymmetric heterobinuclear complex bridged by imidazolate [(trien)Cu im Zn(tren)](CLO4)3(trien=triethylenetetraamine,tren=2,2′,2″-triaminotriethylamine,im=imidazolate anion) were synthesized and characterized by elemental analysis,molar conductivity,reflectance spectra and magnetic moments at room temperature.The electrochemical properties of complexes were examined respectively by cyclic voltammetry in CH3CN and in H2O.The results showed that the presence of Zn(Ⅱ) increased the electron accepting ability of Cu(Ⅱ) in the imidazolate-bridged Cu(Ⅱ)-Zn(Ⅱ) complexes.Furthermore,the experimental data indicated that all of the imidazolate bridge split at Zn(Ⅱ) side in water solution.
【Key words】 Cu(Ⅱ); Asymmetric heterobinuclear complex; Cyclic voltammetry;
- 【文献出处】 分析测试学报 ,Journal of Instrumental Analysis , 编辑部邮箱 ,2006年06期
- 【分类号】O641.4
- 【被引频次】2
- 【下载频次】184