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首页> 外文期刊>Crystal growth & design >Effect of N-donor ancillary ligands on supramolecular architectures of a series of zinc(II) and cadmium(II) complexes with flexible tricarboxylate
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Effect of N-donor ancillary ligands on supramolecular architectures of a series of zinc(II) and cadmium(II) complexes with flexible tricarboxylate

机译:N供体辅助配体对一系列具有柔性三羧酸盐的锌(II)和镉(II)配合物的超分子结构的影响

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摘要

This work presents a systematic investigation on reactions of a flexible tricarboxylic acid with Zn(II), Cd(II) in the presence of varied N-donor ancillary ligands. Seven new metal-organic frameworks [Zn-3(bta)(2)(bPY)(2)] (1), [Zn-3(bta)(2)(dpe)(2)] center dot 2H(2)O (2), [Zn-2(OH)(bta)(bpe)] center dot 2H(2)O (3), [Zn-2(OH)(bta)(bpp)] (4), [Cd-2(bta)(bpy)(2)(H2O)]ClO4 center dot H2O (5), [Cd-3(bta)(2)(bPY)(2)]center dot 2H(2)O (6), and [Cd-3(bta)(2)(H2O)(2)] (7) [bta(3-) = benzene-1,3,5-triacetate, bpy = 4,4'-bipyridine, dpe = 1,2-di(4-pyridyl)ethylene, bpe = 1,2-bis(4-pyridyl)ethane, and bpp = 1,3-bis(4-pyridyl)propane] have been obtained and characterized by single-crystal X-ray diffraction, IR, thermogravimetric and elemental analyses. Complexes 1-3, 5, and 6 are three-dimensional (3D) architectures containing infinite two-dimensional (2D) networks pillared by N-donor ligands, whereas 4shows 2D network structure. Complex 3 has 2-fold interpenetration of 3D frameworks with 4.8(2) networks linked by bpe ligands, and 5 features an unusual 3D cationic supramolecular architecture. Complex 7 contains the Kagome lattice inorganic layers, which are further linked by bta(3-) ligands to form a 3D supramolecular architecture. The results showed that the structure and flexibility of the N-donor ancillary ligands have great influence on the structure of the complexes. The photoluminescence properties of 1-7 in the solid-state at room temperature have been studied.
机译:这项工作提出了一种灵活的三羧酸与Zn(II),Cd(II)在各种N供体辅助配体存在下的反应的系统研究。七个新的金属有机骨架[Zn-3(bta)(2)(bPY)(2)](1),[Zn-3(bta)(2)(dpe)(2)]中心点2H(2) O(2),[Zn-2(OH)(bta)(bpe)]中心点2H(2)O(3),[Zn-2(OH)(bta)(bpp)](4),[Cd -2(bta)(bpy)(2)(H2O)] ClO4中心点H2O(5),[Cd-3(bta)(2)(bPY)(2)]中心点2H(2)O(6) ,和[Cd-3(bta)(2)(H2O)(2)](7)[bta(3-)=苯-1,3,5-三乙酸酯,bpy = 4,4'-联吡啶,dpe =获得了1,2-二(4-吡啶基)乙烯,bpe = 1,2-双(4-吡啶基)乙烷和bpp = 1,3-双(4-吡啶基)丙烷]并通过单晶表征X射线衍射,IR,热重和元素分析。配合物1-3、5和6是三维(3D)架构,包含由N供体配体构成的无限二维(2D)网络,而4显示2D网络结构。复杂物3具有3D框架的2倍互穿,该3D框架具有通过bpe配体连接的4.8(2)网络,而复合物3具有不寻常的3D阳离子超分子结构。配合物7包含Kagome晶格无机层,这些层进一步通过bta(3-)配体连接形成3D超分子体系。结果表明,N-供体辅助配体的结构和柔性对配合物的结构有很大影响。研究了在室温下固态下1-7的光致发光特性。

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