| 由芳香羧酸和1,3,5-三咪唑基苯为配体构筑的锌、镉配合物的合成、结构和荧光性质 |
| Syntheses, Crystal Structures and Luminescent Properties of Zinc(Ⅱ) and Cadmium(Ⅱ) Coordination Polymers Constructed by Aromatic Carboxylates and 1,3,5-Tris(imidazol-1-yl)benzene |
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| 摘要: 通过水热法得到了2个配位聚合物{[Zn(timb)(BTEC)0.5]·H2O}n(1)和{[Cd(timb)(DPA)]·H2O}n(2)(timb=1,3,5-三咪唑基苯,H4BTEC=均苯四甲酸,H2DPA=2,2-联苯二甲酸),对它们进行了元素分析、红外光谱分析,并利用X射线衍射测定了它们的单晶结构。 配合物1属于三斜晶系,P1空间群。配合物2属于单斜晶系,C2/c空间群。配合物1拥有一个不寻常的三维框架结构,其拓扑为(4.63·86)2(42·84)(63)2;而配合物2具有一维单层纳米管结构。结果说明了金属离子和有机羧酸配体在配合物组装过程中起着非常重要的作用。此外,在室温下对2个配合物进行了荧光性质分析。 |
| 关键词: 配位聚合物 三咪唑配体 芳香羧酸配体 晶体结构 荧光性质 |
| 基金项目: 国家自然科学基金资助项目(No.21271106)和江苏省“333工程”培养基金资助项目。 |
| Abstract: Two coordination polymers, namely {[Zn(timb)(BTEC)0.5]·H2O}n (1) and {[Cd(timb)(DPA)] ·H2O}n (2), have been obtained by the reaction of metal salt (zinc nitrate or cadmium nitrate), 1,3,5-tris(imidazol-1-yl)benzene (timb) with two aromatic carboxylic acids, 1,2,4,5-benzenetetracarboxylic acid (H4BTEC) and diphenic acid (H2DPA). They were characterized by IR spectroscopy, elemental analysis and single-crystal X-ray diffraction. Complex 1 crystallizes in triclinic, space group P1 with a=0.991 32(9) nm, b=1.018 23(10) nm, c=1.112 45(11) nm, α=81.479 0(10)°, β=65.613 0(10)°, γ=62.318 0(10)°. Complex 2 belongs to monoclinic, space group C2/c with a=2.633 0(2) nm, b=0.841 96(8) nm, c=2.353 5(2) nm, β=98.027 0(10)°. Structural analyses reveal that complex 1 exhibits a novel three-dimensional (3D) (3,4,5)-connected framework with an unusual (4.63·86)2(42·84)(63)2 topology, whereas complex 2 possesses a one-dimensional (1D) single-wall metal-organic nanotube based on double helical chains. The results show that the nature of metal ions and the carboxylic building blocks play an important role in the formation of complexes with diverse structures. The luminescent properties of two complexes have also been investigated. |
| Keywords: coordination polymer tris(imidazole) ligands polycarboxylate crystal structure luminescence |
| 投稿时间：2015-09-28 修订日期：2015-11-07 |
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| 刘光祥.由芳香羧酸和1,3,5-三咪唑基苯为配体构筑的锌、镉配合物的合成、结构和荧光性质[J].无机化学学报,2016,32(1):175-183. |
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