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多氮异双核Cu(Ⅱ)-Zn(Ⅱ)非对称咪唑桥联配合物的合成及电化学性质 被引量:2

Synthesis,charactrization and electrochemical properties of Cu(Ⅱ)-Zn(Ⅱ) asymmetric polyaza heterobinuclear complexe bridged by imidazolate
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摘要 合成了二亚乙基三胺(dien)和咪唑为配体的两个铜(Ⅱ)单核配合物[(dien)Cu](ClO4)2[、(dien)Cu imH](ClO4)2和一个非对称性的咪唑桥联铜锌异双核配合物[(dien)Cu im Zn(tren)](ClO4)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,增强催化歧化超氧离子的活性。在水溶液中咪唑桥异双核配合物不很稳定,部分从Zn(Ⅱ)端断裂。 Two mononuclear complex [(dien)Cu] (ClO4)2, [(dien)Cu imH] (ClO4)2 and one Cu(Ⅱ)-Zn(Ⅱ) asymmetric heterobinuclear complex bridged by imidazolate [(dien)Cu im Zn (tren)] (ClO4)3 (Where dien = diethylenetriamine, tren = 2, 2', 2"-triaminotriethylamine, im = imidazolate anion), were synthesized and characterized by elemental analysis, molar conductivity, spectra of reflectance and magnetic moments at room temperaturn. The electrochemical properties of complexes were, respectively, examined by cyclic voltammetry in CH3CN and in H2O; The results showed that the presence of Zn (Ⅱ) increase the electron accepting ability of Cu (Ⅱ) in the imidazolate-bridged Cu(Ⅱ)-Zn(Ⅱ) complexes. Furthermore, the experimental data indicated that the port of the imidazolate bridge spht at Zn (Ⅱ) side in water solution.
出处 《化学试剂》 CAS CSCD 北大核心 2006年第4期193-196,201,共5页 Chemical Reagents
基金 江西省自然科学基金资助项目(0520083) 宜春市科技计划重点资助项目(055425)
关键词 铜(Ⅱ) 锌(Ⅱ) 非对称异双核配合物 循环伏安 Cu (Ⅱ) Zn (Ⅱ) asymmetric heterobinuclear complex cyclic voltammetry
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