镧与对苯二甲酸邻啡咯啉二元配合物的合成与表征.doc

毕业设计（论文） 题 目： 镧与对苯二甲酸邻啡咯啉二元 三元配合物的合成与表征 摘 要 稀土是一类具有特殊结构和性质的元素，稀土元素不仅大量用于工业，而且在农业和医学领域也有广泛应用。按照配合物的配位键理论，这类元素极易与一些配位体形成稳定的配合物。因而具有优异的光、电、磁等特种功能。因此稀土材料的应用已涉及到生物、农业、医药和军事等各个领域。以苯甲酸及其衍生物为配体已经有很多研究，但以苯二甲酸为配体却较少，而且前人对稀土的研究主要集中在具有很好荧光性铕鋱等金属上，对于镧的研究相对较少。鉴于此，本研究设计合成一系列新的镧与对苯二甲酸与邻啡罗啉的二元三元配合物.具体内容如下： 1、本论文以对苯二甲酸为第一配体，以l，10-邻菲哕啉为第二配体合成7种镧的二元和三元配合物，通过元素分析(C、N、H和EDTA配位滴定，初步确定配合物的组成。 2、用IR、TG-DTG等手段对镧的配合物进行了表征和性质研究。在配合物中，La(Ⅲ)与羧基氧原子和中性配体的氮原子形成了稳定的化学键这些配合物均有较好的热稳定性。 3、本论文主要工作集中在：(1)研究了不同溶剂对合成配合物的影响。(分别采用去离子水和无水乙醇:水=1:1两种试剂进行溶解)（2)比较不同温度（60℃和80℃）对形成的配合物的产率的影响。 (3)培养单晶体，以期进一步研究晶体结构与配合物性能之关系。 这些研究，为进一步研制新的高效稀土材料提供了一定科学依据。 关键词：镧，对苯二甲酸，邻菲罗琳 ，合成，表征  Abstract The rare earth is one kind has the special structure and the nature element, the rare-earth element not only massively uses in the industry, moreover also has the widespread application in the agriculture and the medicine domain. According to the preparation coordination bond theory, this kind of element is extremely easy with some ligands to form the stable preparation. As has the outstanding light, the electricity, magnetism and so on special function。Therefore the rare earth materials application has involved to the biology, the agriculture, the medicine and the military and so on each domain。Already had many research take the benzoic acid and the derivative as the ligand, but are actually few take the phthalic acid as the ligand, moreover the predecessor mainly concentrates to the rare earth research in has metals and so on very good on fluorescence you terbium, are relatively few regarding the lanthanum research。In view of this, this research design synthesizes a series of new lanthanum and the dicarboxylic acid and l,10- neighbour Philippines dual three Yuan preparations. The actual content is as follows: 1.The present paper take the dicarboxylic acid as the first ligand, hui lin synthesizes 7 kind of lanthanum ta