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在非水体系中首次合成了硝酸稀土(Ⅲ)的邻香兰素(2-羟基-3-甲氧基苯甲醛)与乙二胺(L~1)、联苯胺(L~2)、邻苯二胺(L~3)和间苯二胺(L~4)的双Schiff碱配合物(1—8).通过测定红外光谱、摩尔电导、X射线衍射和X射线光电子能谱推断了配合物的结构和键合情况,配合物的中心金属离子与配体中的二个氮原子、二个氧原子和二个硝酸根中的四个氧原子配位,其配位数为8.通过热重及差热分析发现配合物在低于230℃时很稳定,对于同一配体与不同中心金属离子形成的配合物来说,其热稳定性随稀土离子半径的减小而降低.在77K时测试了铕配合物的激发光谱和荧光光谱,观察到Eu~(3+)的特征发射峰.
In the non - aqueous system, the first synthesis of rare earth (Ⅲ) o - vanillin (2 - hydroxy - 3 - methoxybenzaldehyde) and ethylenediamine (L ~ 1), benzidine (L ~ 2) Schiff base complexes (1-8) of phenylenediamine (L ~ 3) and m-phenylenediamine (L ~ 4) were synthesized.The complexation was confirmed by IR, Molar conductance, X-ray diffraction and X-ray photoelectron spectroscopy The structure and bonding of the complex, the center of the complex metal ions and ligand two nitrogen atoms, two oxygen atoms and two nitrate in four oxygen atoms coordination number 8. Through Thermogravimetry and differential thermal analysis showed that the complex was stable below 230 ℃ and the thermal stability decreased with the decrease of radius of rare earth ions for the complex formed by the same ligand and different central metal ions. The excitation and fluorescence spectra of europium complexes were tested and the characteristic emission peak of Eu 3+ was observed.