| 由联苯-2,4,4',6-四甲酸构筑的三维镉配位聚合物的合成、结构及与DNA作用 |
| Syntheses, Structures and DNA-Binding of Cadmium Coordination Polymers with 3D Frameworks Constructed by Biphenyl-2,4,4',6-tetracarboxylic Acid |
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| 摘要: 在水热条件下,以联苯-2,4,4',6-四甲酸(C16H10O12,H4bptc)为主配体、1,3-二(4-吡啶基)-丙烷(bpp)为辅助配体,与氯化镉(CdCl2·2.5H2O)反应合成了2个三维镉配位聚合物{[Cd2(bptc)(H2O)3]·H2O}n(1),{[Cd2(bptc)(bpp)·H2O]·2.25H2O}n(2)。用元素分析、红外光谱对配合物的组成及结构进行了表征,并通过X射线单晶衍射的方法测定了配合物的晶体结构。配合物1具有双核结构,2个中心离子Cd(Ⅱ)同为六配位,均形成略有畸变的八面体结构;而配合物2尽管也具有双核结构,但不同于1的是其中一个中心离子构成略显畸变的八面体几何结构,另一个却构成五角双锥结构。用溴化乙锭荧光光谱法测定了配体和配合物与DNA作用情况,结果表明配合物与DNA的作用强于配体。 |
| 关键词: 联苯-2,4,4',6-四甲酸 1,3-双(4-吡啶基)-丙烷 镉配位聚合物 DNA作用 |
| 基金项目: 浙江省自然科学基金(No.LY12B01003)资助项目。 |
| Abstract: Two new cadmium coordination polymers, {[Cd2(bptc)(H2O)3]·H2O}n (1) and {[Cd2(bptc)(bpp)·H2O]·2.25H2O}n (2), were synthesized under hydrothermal reactions by using biphenyl-2,4,4',6-tetracarboxylic acid(H4bptc), CdCl2·2.5H2O and 1,3-di(4-pyridyl)propane(bpp). Both of them were characterized by elemental analysis, IR spectra, single crystal X-ray diffraction. Complex 1 is a binuclear structure with two six-coordinated Cd(Ⅱ), both of which are distorted octahedral structures. The binuclear of Complex 2 is different. One Cd(Ⅱ) is distorted octahedral, and the other is seven-coordinated to form a pentagonal bipyramid. The interaction between two complexes, ligand and DNA was studied by EtBr fluorescence probe. Photoluminescence studies revealed that the interaction of complex 2 to the DNA is stronger than complex 1. CCDC: 952960, 1; 952962, 2. |
| Keywords: biphenyl-2,4,4',6-tetracarboxylic acid cadmium coordination polymer 1,3-di(4-pyridyl)propane DNA-binding |
| 投稿时间：2015-08-12 修订日期：2015-12-31 |
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| 余玉叶,沈伟,吴小勇,赵国良.由联苯-2,4,4',6-四甲酸构筑的三维镉配位聚合物的合成、结构及与DNA作用[J].无机化学学报,2016,32(2):259-266. |
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