N,N′,N″-(三吡啶甲酰)-三乙氨基胺与稀土硝酸盐配合物的合成、表征与荧光性质  

Synthesis, Characterization and Luminescent Properties of Complexes of Rare Earth Nitrates with Tris 2-etamine

作　　者：台夕市[1] 唐瑜[1] 刘伟生[1] 谭民裕[1] 

机构地区：[1]兰州大学化学化工学院,甘肃兰州730000

出　　处：《中国稀土学报》2003年第3期348-350,共3页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金资助项目(29871014)

摘　　要：合成了三脚架型配体N,N′,N″ (三吡啶甲酰) 三乙氨基胺(L)及其稀土硝酸盐配合物,并通过元素分析、红外光谱、核磁共振与热分析谱对它们进行表征,同时,初步研究了配体及其Eu(Ⅲ)、Tb(Ⅲ)配合物在甲醇溶液的荧光性质。A tripodal ligand, tris {2ethyl}amine(L), and its complexes with rare earth nitrates were synthesized. These new complexes with the general formula of RE(NO3)3·L·6H2O(where RE= La, Nd, Eu, Tb, Y) were characterized by elemental analysis, IR spectra, thermal analysis, 1HNMR spectra, molar conductivity and luminescent spectra. All the complexes are stable in air and their conductances in acetonitrile solution lie in the range of 142～150 S·cm2·mol-1, indicating that they are 1∶1 type electrolytes. The IR and 1H NMR spectra of the ligand and its complexes show that all the C=O groups take part in coordination to the metal ions. The thermal behaviour of Eu complex shows that the loss occurs at 75～120 ℃ and 120～210 ℃ corresponding to the loss of four H2O and two H2O, respectively. The weight losses found in this process compare with the theoretical values. So the complexes have lattice water and coordination water. The luminescent spectrum of the Tb(Ⅲ) complex was investigated in methanol.

关 键 词：无机化学 三脚架配体 稀土硝酸盐 荧光性质 稀土配合物 

分 类 号：O614.33[理学—无机化学]