稀土-氨基多羧酸类配合物的分子结构及配位规律的研究  

Investigation on Molecular Structures and Coordination Laws of Rare Earth Metal Complexes with Aminopolycarboxylic Acids

作　　者：王君[1] 张向东[1] 贾卫国[1] 刘振荣[1] 领小[1] 徐锐[1] 

机构地区：[1]辽宁大学化学系,辽宁沈阳110036

出　　处：《中国稀土学报》2002年第z3期30-36,共7页Journal of the Chinese Society of Rare Earths

基　　金：辽宁省教育厅自然科学基金项目

摘　　要：报道了稀土金属离子与一系列氨基多羧酸类配体形成配合物的分子结构和晶体结构。讨论了稀土金属离子与氨基多羧酸类配体的配位规律,证明了稀土金属离子像其他过渡金属离子一样,与氨基多羧酸配体形成配合物的配位数和配位结构取决于稀土金属离子的离子半径,电子结构和氧化态以及氨基多羧酸类配体的形状。氨基多羧酸类配体是指氨基三乙酸(=nta),乙二胺四乙酸(=edta),反式 1,2 环己二胺四乙酸(=Cydta),二乙三胺五乙酸(=dtpa)和三乙四胺六乙酸(=ttha)。The molecular and crystal structures of the rare earth metal complexes with aminopolycarboxylic acid liands were reported in this paper. The coordination laws of aminopolycarboxylic acid liands to the rare earth metal ions were discussed. It was proved that the coordination numbers and coordinate structures of the rare earth metal complexes with aminopolycarboxylic acid liands were decided by the ionic radius, electronic configuration, oxide station of the central rare earth metal ions and the shape of aminopolycarboxylic acid liands like the transition metal ions. The applications of the rare earth metal complexes were described. The aminopolycarboxylic acid liands are refer to nta (=nitrilotriacetic acid), edta (=ethylenediaminetetraacetic acid), Cydta (=trans1,2cyclohexanediaminetetraacetic acid), dtpa (=diethylenetriaminepentaacetic acid) and ttha (= triethylenetetraaminehexaacetic acid).

关 键 词：稀土 氨基多羧酸 配合物 结构 

分 类 号：O614.24[理学—无机化学]