| 由吡嗪衍生配体构筑的金属Cd(Ⅱ)配位聚合物的合成、结构及生物活性 | |
| Structural Diversity of Two Cadmium(Ⅱ) Polymers Based on Pyrazine Derivative Ligand: Syntheses, Crystal Structures and Bioactivities | |
| 摘要: 在相同的反应条件下,采用吡嗪衍生物作为配体与不同的金属镉盐反应,合成了2个新颖的配位化合物[Cd(L)2]n(1)和[Cd2(L)2(CH3COO)2(H2O)2](2)(HL=4-((3-(pyrazin-2-yl)-1H-pyrazol-1-yl)methyl)benzoicacid),并通过元素分析、热重分析、荧光光谱、X射线单晶衍射对化合物进行分析。结构分析表明1属于三斜晶系,P1空间群。金属Cd(Ⅱ)采用三角双锥构型,最后形成2D三明治结构;而2是双核结构,其中羧酸基团采用双齿螯合与金属配位。1与2的结构差异很大程度上归结于羧酸配位模式的不同以及阴离子的协同效应。此外,对配合物1和2进行了抗氧化活性的研究。 | |
| 关键词: 金属镉盐 吡嗪衍生物 羧酸 荧光性质 抗氧化活性 | |
| 基金项目: 国家自然科学基金(No.21401151),四川省科技支撑计划(No.2015GZ0233),中央高校基本科研业务费专项资金(No.SWJTU12CX049)资助项目。 | |
| Abstract: Under same conditions, ligand derived from Pyrazine was selected and reacted with different Cadmium(Ⅱ) salts, producing two novel coordination compounds [Cd(L)2]n (1) and [Cd2(L)2(CH3COO)2(H2O)2] (2) (HL=4-((3-(pyrazin-2-yl)-1H-pyrazol-1-yl)methyl) benzoic acid), which were characterized by element analysis, TGA, fluorescence spectrum and single X-ray crystal diffraction. Compound 1 crystallizes in the triclinic system with P1 space group, and each Cd(Ⅱ) trigonal bipyramidal are connected to each other to form an infinite 2D sandwich structure. Compound 2 adopts binuclear structure with space group triclinic. Two carboxylate groups coordinated to Cd(Ⅱ) adopt a bidentate chelating mode fashion, which are different from coordination mode of 1. Structural discrepancy in compounds 1 and 2 can be assigned to different chelating modes of carboxylate groups of ligand, as well as ions effect. Superoxide dismutase (SOD) mimetic activity of compound 1 and 2 has been investigated by the modified Marklund method. | |
| Keywords: cadmium(Ⅱ) pyrazine derivative ligand carboxylate groups fluorescence properties SOD-like activity | |
| 投稿时间：2015-02-09 修订日期：2015-07-15 | |
| 摘要点击次数: 2286 | |
| 全文下载次数: 1686 | |
| 王萃娟,毛凯力,代海玉,刘晓雷,孟涛,张志斌,周先礼,王尧宇.由吡嗪衍生配体构筑的金属Cd(Ⅱ)配位聚合物的合成、结构及生物活性[J].无机化学学报,2015,31(11):2221-2228. | |
| 查看全文 查看/发表评论 下载PDF阅读器 | |
| Support information: | |
|
| |
|
| |
|
| |