Solution and solid state properties of copper complex with aiminodiacetic derivative
Received date: 2016-04-22
Online published: 2018-05-07
利用芳香柔性多元酸 N,N,N',N'-对苯二甲基二胺四乙酸 (H$_{4}$L) 与 Cu(NO$_{3})_{2}$ 反应构筑了一种多核铜配合物. 对该配合物的单晶进行了 X-射线晶体结构分析, 表明该配合物属于正交晶系, 空间群为 Pmn21. 该配合物呈现出了空间三维框架结构, 其中长方形孔道大小为 1.105 6 nm$\times $0.696 4 nm. 电喷雾质谱 (electro spray ionization-mass spectrometry, ESI-MS) 及电位滴定结果显示, 该多核铜配合物在溶液中可以双核铜单体配离子的形式存在. 对该多核铜配合物的固体及溶液配位行为的研究可为该类物质在 磁性材料、催化及金属酶的结构及功能模拟方面提 供理论依据.
梁绮娴, 宫腾, 赵永梅, 朱守荣 . 一种亚氨基二乙酸衍生物的多核铜配合物的固液性质[J]. 上海大学学报(自然科学版), 2018 , 24(2) : 265 -271 . DOI: 10.12066/j.issn.1007-2861.1776
Reaction of the N,N,N',N'-p-xylylenediamine tetracetic acid (H$_4$L) with Cu(NO$_3$)$_2$ leads to the formation of a new polynuclear copper complex. Crystal structure of the polynuclear copper complex has been determined. This polynuclear copper complex belongs to the orthorhombic space group Pmn21, and exhibits a novel 3D structure. Rectangular channels with a dimension of 1.105 6 nm$\times$0.696 4 nm, based on the distances of Cu ions, are found in this structure. Additionally, the results of electro spray ionization-mass spectrometry (ESI-MS) spectra and potentiometric measurements show that the polynuclear copper complex exists as a dinuclear species in the solution. The results may provide theoretical basis to potential applications of the polynuclear copper complex in magnetism, catalysis and structural and functional models of metalloenzymes.
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