席夫碱构筑的配位化合物的合成、结构及性质

发布时间：2018-06-14 18:50

  本文选题：席夫碱配体 + 3d-4f　； 参考：《内蒙古大学》2017年硕士论文

【摘要】：本论文以席夫碱配位化合物的合成、结构为主要研究内容。利用两个主配体:五齿席夫碱H2L1[邻香兰素缩N-(2-羟乙基)乙二胺]和四齿席夫碱H2L2(邻香兰素缩邻氨基苯酚),分别与过渡金属盐及稀土金属盐反应获得配合物1-16。合成过程中通过添加有机桥联配体及改变反应条件等方式,利用零维席夫碱配合物构筑一维链状结构,并对配体、配合物进行了红外光谱表征。对配合物3-5、10和11-16进行了 X-射线单晶衍射测试,对配合物4、10和11-14进行热稳定性分析,配合物12进行了磁性测试。配合物的分子式如下:[Fe(HL~1)_2]Cl为风车状结构的单核Fe配合物,分子间通过π-π堆积和氢键作用形成一维链状超分子。配合物2为双核Cu配位化合物,其结构中的辅助配体bbi桥联两个[Cu-L]的部分,再通过分子间氢键作用形成了一维链状超分子。配合物3-16是四核[Ni2Ln2]系列配位簇合物。配合物中,镍离子Ni(Ⅱ)为[O5N]六配位,呈现扭曲八面体构型;稀土离子Ln(Ⅲ)为[O7N]八配位扭曲的正方反棱柱多面体。镍离子Ni(II)与稀土离子LnⅢ)由μ2-O或μ3-O桥联形成[Ni2Ln206]缺陷立方烷结构(或蝴蝶拓扑结构)。通过选用含羧酸基团的辅助配体、改变反应条件,使单分子席夫碱配合物(3-10)通过阴离子调节使分子间形成氢键和π-π相互作用构筑成一维链状配位超分子(11-16)。磁性测试表明,配合物12中存在铁磁性相互作用。实验过程中,辅助配体的竞争作用、辅助配体对溶液体系酸碱度的贡献以及反应过程中反应物的添加顺序,均对晶体的结构产生影响。
[Abstract]:In this thesis, the synthesis and structure of Schiff base coordination compounds are the main research contents. Two principal ligands, pentodentate Schiff base H2L1 and tetradentate Schiff base H2L2, reacted with transition metal salts and rare earth metal salts respectively to obtain complexes 1-16. One dimensional chain structure was constructed by adding organic bridged ligands and changing reaction conditions. The ligand and complexes were characterized by IR spectra. The complexes 3-5N10 and 11-16 were characterized by X-ray single crystal diffraction, the thermal stability of complexes 4N10 and 11-14 were analyzed, and the magnetic properties of complex 12 were tested. The molecular formula of the complexes is as follows: [Fehhl1 + 2] Cl is a mononuclear Fe complex with windmill structure, and the molecules form one-dimensional chain supramolecular by 蟺-蟺 stacking and hydrogen bond interaction. Complex 2 is a binuclear Cu coordination compound, in which the auxiliary ligand bbi bridges two [Cu-L] parts, and then forms one dimensional chain supramolecular by the interaction of hydrogen bonds between molecules. Complex 3-16 is a tetranuclear [Ni _ 2L _ n _ 2] coordination cluster. In the complexes, Ni (鈪，

本文编号：2018603