邻香兰素缩乙二胺希夫碱稀土配合物的合成与表征  

Synthesis and Characterization of Rare Earth Complexes with Ethylenediamine o-Vanillin Schiff Base

作　　者：胡应喜[1] 马小童[1] 丁士豪 郭小龙[1] 

机构地区：[1]北京石油化工学院化学工程学院,北京102617

出　　处：《化学与生物工程》2016年第2期35-37,59,共4页Chemistry & Bioengineering

基　　金：2015年国家级大学生创新创业计划项目(2015J00090)

摘　　要：以邻香兰素缩乙二胺希夫碱与稀土硝酸盐为原料、无水乙醇为溶剂,在加热搅拌回流下合成了7种邻香兰素缩乙二胺希夫碱稀土配合物,并通过元素分析、XRD、IR、UV、摩尔电导率、TG-DTA等分析方法对其结构进行了表征。结果表明,配合物的化学式为[REL(NO3)2]NO3,金属离子与配体的化学计量比为1∶1;金属离子配位数为8,其中配体中的2个羟基氧原子和2个氮原子与金属离子配位,2个NO-3与金属离子以双齿配位;外界有1个NO-3;得到的配合物仍然具有吸收紫外线的能力,其热稳定性也较高。Using ethylenediamine o-vanillin Schiff base and rare earth nitrates as raw materials,anhydrous ethanol as a solvent,seven kinds of rare earth complexes with ethylenediamine o-vanillin Schiff base were synthesized by heating,stirring and refluxing.The structures of these complexes were characterized by elemental analysis,XRD,IR,UV,molar conductivity,TG-DTA analyses and so on.Results showed that these complexes had general chemical formula[REL（NO3）2]NO3,the stoichiometry of the complexes was found to be 1∶1（metal∶ligand）.The coordination number for metal ion was 8：two oxygen donor atoms from hydroxyl groups and two nitrogen donor atoms coordinated with central metal ion.In addition,two NO-3ions coordinated with the same metal ion in bidentate ligands,and the peripheral of the complex had single NO-3.The obtained complexes still had the ability to absorb ultraviolet rays with good thermal stability.

关 键 词：邻香兰素 邻香兰素缩乙二胺希夫碱 稀土配合物 合成与表征 

分 类 号：O614.33[理学—无机化学]