Synthesis, characterization, electrochemical studies and catecholase-like activity of a series of mononuclear Cu(II), homodinuclear Cu(II)Cu(II) and heterodinuclear Cu(II)Ni(II) complexes of a phenol-

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• 作者：Davar M. Boghaei ; Mahdi Behzad and Abolfazl Bezaatpour
• 关键词：Dinuclear ; Heterodinuclear ; Compartmental ; Catecholase ; Catechol
• 刊名：Journal of Molecular Catalysis A ; Chemical
• 出版年：2005
• 期刊代码：57_13811169
• 类别：ch
• 出版时间：2005
• 卷：241
• 期：1-2
• 页码：1-7
• 文件大小：297 K

摘要

A series of previously reported mononuclear Cu(II) and homodinuclear Cu(II)Cu(II) complexes, as well as, novel mononuclear Cu(II), homodinuclear Cu(II)Cu(II), and heterodinuclear Cu(II)Ni(II) complexes of a phenol-based dinucleating ligand with two different N(amine)₂O₂ and N(imine)₂O₂ coordination sites, were synthesized and characterized by elemental analyses, infrared and electronic absorption spectroscopies and conductivity measurements. The electrochemical behavior and catecholase-like activity of the complexes were also studied using cyclic voltammetry and UV–vis spectrophotometry, respectively. Our results show that the dinuclear complexes are more effective catalysts in the oxidation of catechol to the corresponding quinone than the mononuclear complexes. Furthermore, the homodinuclear Cu(II)Cu(II) complexes show greater catalytic activity compared to the corresponding heterodinuclear Cu(II)Ni(II) complexes.