九配位Sm^(3+),Eu^(3+)和Gd^(3+)与EDTA配合物的合成及结构研究  

Synthesis and Structure Studies of Nine-Coordinate Sm^(3+),Eu^(3+) and Gd^(3+) Complexes with EDTA Ligand

作　　者：王君[1] 张朝红[1] 孔玉梅[1] 张向东[1] 刘欣竹[1] 康平利[1] 佟键[1] 关宏宇[1] 

机构地区：[1]辽宁大学化学系,辽宁沈阳110036

出　　处：《稀土》2005年第1期5-11,52,共8页Chinese Rare Earths

摘　　要：详细报道了Sm3+,Eu3+和Gd3+分别与乙二胺四乙酸(EDTA)配体形成配合物的合成及结构测定。通过单晶X-射线衍射仪和元素分析的测定,确定了这些配合物的结构都是以Sm3+,Eu3+和Gd3+为中心的九配位单帽四方反棱柱体结构,组成分别为Na[Sm(EDTA)(H2O)3]·5H2O,Na[Eu(EDTA)(H2O)3]·4H2O和Na[Gd(EDTA)(H2O)3]·5H2O。Sm^(3+), Eu^(3+) and Gd^(3+) complexes with ethylenediaminetetraacetic acids (EDTA) were prepared and their composition and structures were determined as Na[Sm(EDTA)(H_2O)_3]·5H_2O, Na[Eu(EDTA)(H_2O)_3]·4H_2O and Na[Gd(EDTA)(H_2O)_3]·5H_2O by single-crystal X-ray diffraction analyses and elemental analyses, respectively. In these complexes, the REN_2O_7 parts form the nine-coordinate structures with mono-capped square antiprism.

关 键 词：SM^3+ EU^3+ GD^3+ 乙二胺四乙酸(EDTA) 配合物 分子结构 

分 类 号：O614.33[理学—无机化学]