优秀毕业论文（设计）_吡啶酰腙类稀土Dy配合物的合成及晶体结构.docx

摘要为了获得具有新颖结构的稀土金属配合物并且探索其在功能材料方面的潜在用途，本论文采用稀土Dy3+为中心配位原子，N3-苯甲酰吡啶基-2-甲酰胺腙为配体合成目标产物。本文主要研究内容和结论如下：(1)在甲醇与水的体系中，用三乙胺调节pH，取n(N3-苯甲酰吡啶基-2-甲酰胺腙):n[Dy(NO3)3·6H2O]=1:2，于常温下合成了新颖的稀土金属配合物。并通过元素、红外图谱分析，对其组成进行了初步表征。(2)通过X-射线单晶衍射测定了稀土金属配合物的单晶结构。配合物(C26 H26 Dy N9 O7)是单核八配位变形十二面体，属于单斜晶系，空间群为C2，其结构单元是由两个失去质子的bpad-采用三齿配位模式与中心Dy3+螯合配位，以及两个水分子以配位键形式结合，NO3-离子作为抗衡阴离子填充其中，保持电荷平衡，使其结构更加稳定。关键词:稀土Dy；吡啶酰腙化合物；分子结构AbstractIn order to obtain rare earth metal complexes having a novel structure and explore its potential use in functional materials, this paper Dy3+ rare earth-centered ligand atoms, N3-benzoyl-2-pyridine carboxamide hydrazone ligand synthesis target product.The main contents and conclusions are as follows:(1) In the system of methanol and water, the pH adjusted with triethylamine, taken n(N3-benzoyl hydrazone pyridin-2-carboxamide):n[Dy(NO3)3?6H2O]=1:2, at room temperature synthesis of novel rare earth complexes. And by elemental, infrared spectrum analysis, its composition was characterized.(2) By X-ray diffraction crystal structure determination of the rare earth metal complexes. Complexes(C26H26DyN9O7) are eight-coordinated mononuclear deformed dodecahedron, are monoclinic, space group C2, its structural unit is composed of two protons lose bpad- use tridentate coordination mode and Center Dy3+ chelating ligand and two water molecules combine to form coordination bonds, NO3- ions as counter anions populate and maintain charge balance, its structure is more stable.Keywords:Rare earth Dy; pyridine acylhydrazone compounds; molecular structure 目录1.绪论1 1.1 引言1 1.2 稀土金属配合物的研究进展1 1.3 稀土配合物的构筑2 1.3.1 配体的选择2 1.4 研究目的及意义3 1.5 选题依据及研究内容3 1.5.1 选题依据3 1.5.2 研究内容3 2．配合物[Dy(bpad)2(H2O)2]+[NO3]-的制备及表征5 2.1 试剂与仪器5 2.1.1 试剂5 2.1.2 仪器5 2.2 配合物[Dy(bpad)2(H2O)2]+[NO3]-的制备52.3配合物[Dy(bpad)2(H2O)2]+[NO3]-的红外表征62.4小结7 3．配合物[Dy(bpad)2(H2O)2]+[NO3]-的晶体结构8 3.1 配合物[Dy(bpad)2(H2O)2]+[NO3]-晶体数据收集及精修83.2 配合物[Dy(bpad)2(H2O)2]+[NO3]-结构描述9 3.3 小结10 4. 结论11 参考文献12 致谢14 1.绪论1.1 引言稀土金属配合物是指各类不同的配体与作为配位中心的稀土金属离子通过配位