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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >Synthesis, spectroscopic and thermal studies of transition metal complexes derived from benzil and diethylenetriamine
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Synthesis, spectroscopic and thermal studies of transition metal complexes derived from benzil and diethylenetriamine

机译:苯甲醚和二亚乙基三胺衍生的过渡金属配合物的合成,光谱和热研究

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摘要

A macrocyclic ligand, bdta (where bdta = 3,6,9,12,15,18-hexaaza-1,2,10,11-tetraphenyl-2,9,11,18-tetraenecyclododecane) has been prepared by cyclocondensation of benzil with diethylenetriamine which efficiently encapsulates transition as well as pseudo-transition metal ions leading to the formation of M(bdta)Cl-2 type complexes [where M = Mn(II), Fe(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II)]. The analytical, spectroscopic and magnetic moment data suggests an octahedral geometry for all the complexes. EPR spectra of Mn(II) and Cu(II) show considerable exchange interaction in the complex. They are non-conducting in DMSO. The TGA profile of the ligand and its complexes are identical and consists of two discreet stages. The voltammogram of Cu-complex exhibits a quasi-reversible one-electron transfer wave for Cu(II)/Cu(I) couple. (C) 2007 Elsevier B.V. All rights reserved.
机译:通过苯环的缩合反应制备了大环配体bdta(其中bdta = 3,6,9,12,15,18-六氮杂-1,2,10,11-四苯基-2,9,11,18-四烯环十二烷)与二亚乙基三胺有效地封装了过渡金属和伪过渡金属离子,导致形成M(bdta)Cl-2型配合物[其中M = Mn(II),Fe(II),Co(II),Ni(II ),Cu(II),Zn(II),Cd(II)和Hg(II)]。分析,光谱和磁矩数据表明所有配合物的八面体几何形状。 Mn(II)和Cu(II)的EPR光谱显示出该配合物中大量的交换相互作用。它们在DMSO中不导电。配体及其配合物的TGA谱图是相同的,由两个不连续的阶段组成。铜配合物的伏安图显示出对Cu(II)/ Cu(I)偶为准可逆的单电子转移波。 (C)2007 Elsevier B.V.保留所有权利。

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