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以水杨醛或邻香草醛、2,6-二氨基吡啶和硝酸钍为原料,采用室温固相法合成了2,6-二氨基吡啶双席夫碱钍(Ⅳ)配合物[ThL1(NO3)2](NO3)2.H2O,[ThL2(NO3)2](NO3)2.H2O。通过元素分析、EDTA滴定法、红外光谱、紫外光谱、热分析方法对配合物的组成和结构进行了表征。结果表明,金属钍与席夫碱配体中的亚氨基上的氮原子、酚氧基上的氧原子以及硝酸根离子形成了配位数为8的配合物。配合物的热分解过程包括失水、配体的氧化分解和氧化为氧化钍。
Using salicylaldehyde or o-vanillin, 2,6-diaminopyridine and thorium nitrate as raw materials, 2,6-diaminopyridine bis-schiff base thorium (Ⅳ) complex [ThL1 ) 2] (NO3) 2.H2O, [ThL2 (NO3) 2] (NO3) 2.H2O. The composition and structure of the complex were characterized by elemental analysis, EDTA titration, IR, UV and thermal analysis. The results showed that the coordination number 8 between the metal thorium and the nitrogen atom of the imino group in the Schiff base ligand, the oxygen atom on the phenoxy group and the nitrate ion formed. The thermal decomposition of the complex includes dehydration, oxidative decomposition of the ligand and oxidation to thorium oxide.