A novel hexadentate ligand and its complexes with divalent metal ions (Zinc, Copper, and Cobalt): Synthesis, characterization, and electrochemical investigation

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• 作者：Zhenhong Wei^a ; ¹ ; Xiang Xie^a ; ¹ ; Jia Zhao^a ; ¹ ; Lingman Huang^a ; ¹ ; Xiaoming Liu^a ; ^b ; ^{xiaoming.liu@mail.zjxu.edu.cn} ; ^{xiaoming.liu@ncu.edu.cn}
• 关键词：Copper(II) ; Cobalt(II) ; Zinc(II) ; Hexadentate ligand ; Transition metal complexes ; Electrochemistry
• 刊名：Inorganica Chimica Acta
• 出版年：2012
• 期刊代码：40_00201693
• 类别：ch
• 出版时间：30 May, 2012
• 卷：387
• 期：Complete
• 页码：277-282
• 文件大小：546 K

摘要

A novel hexadentate ligand, N-(pyridin-2-ylmethyl)-N,N鈥?(bis-(2-(pyridin-2-ylmethylthio))ethyethanamine) (L), containing 鈥淣₄S₂鈥?donor-set was synthesized. Its reaction with one equivalent of divalent metal perchlorate salts, M(ClO₄)₂路6H₂O (M = Zn, Cu, and Co), in methanol yielded three mononuclear complexes [ML](ClO₄)₂ (M = Zn, 1; Cu, 2; Co, 3) in octahedral geometry. The complexes were fully characterized and their structures were determined using X-ray single crystal diffraction analysis. UV-Vis spectra of the complexes revealed that metal-to-ligand charge transfer (MLCT) transition bands showed readily red-shift in the trend of Zn(II), Co(II), and Cu(II) complexes. Upon the divalent metal binding, the ligand-based reduction process shifted positively which, otherwise, is not observable in the electrochemical window.