4个氮支套索冠醚的铕(Ⅲ)、铽(Ⅲ)配合物的合成及表征  

Synthesis and characterization of Eu(Ⅲ),Tb(Ⅲ) complexes of four nitrogen-pivot benzo-aza-lariat crown ethers

作　　者：陆广农[1] 唐宁[1] 

机构地区：[1]兰州大学化学化工学院,甘肃兰州730000

出　　处：《兰州大学学报（自然科学版）》2008年第2期66-68,73,共4页Journal of Lanzhou University(Natural Sciences)

基　　金：国家自然科学基金(20571035);甘肃省自然科学基金(3ZS051-A25-003)资助

摘　　要：以4个氮支套索冠醚为配体,分别合成了一系列Eu(Ⅲ),Tb(Ⅲ)配合物,对其进行了元素分析、红外光谱、摩尔电导及荧光性能测量,确定了配合物的组成可能结构式为Ln(NO_3)_2L·(NO_3)·xH_2O (x=1～4,Ln=Eu,Tb);推测出中心离子配位数为9,4个配体与Eu(Ⅲ),Tb(Ⅲ)形成的配合物都具有较好的荧光性能,并且Tb(Ⅲ)配合物较Eu(Ⅲ)配合物的荧光强度要大.A series of complexes of Eu（Ⅲ）, Tb（Ⅲ） with four nitrogen-pivot benzo-aza-lariat crown ethers were synthesized. All these compounds were characterized by elemental analysis, IR spectroscopy and molar conductivity. The analytical results indicate that the possible structures of these complexes were similar： Ln（NO3）2L.（NO3） · xH20 （x=1-4, Ln=Eu, Tb）. The coordination numbers of the complexs are 10 and the water molecules are at the environment of the complexes. The fluorescence spectra of the complexes in solid state were studied and the results indicate that all of the complexes have high luminescence intensity and the luminescence intensity of the Tb（Ⅲ）-complexes are higher than the Eu（Ⅲ）-complexes.

关 键 词：氮支套索冠醚 稀土Eu(Ⅲ)-Tb(Ⅲ)配合物 合成 表征 

分 类 号：O614[理学—无机化学]