【摘要】 本文综述了稀土金属离子与一系列氨基多羧酸配体(如nta(=氨基三乙酸),edta(=乙二胺四乙酸),cydta(=反式-1,2-环己二胺四乙酸),dtpa(=二乙三胺五乙酸)和ttha(=三乙四胺六乙酸)等)形成配合物的分子结构和晶体结构,发现了这些配合物的配位规律和结构变化,说明了稀土金属离子象其它过渡金属离子一样,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,电子结构和配体形状以及配电离子等。更多还原

【Abstract】 This paper systematically reviews the molecular and crystal structures of rare earth metal complexes with a series of aminopolycarboxylic acid ligands, such as nta (nitrilotriacetic acid), edta (ethylenediaminetetraacetic acid), cydta (trans-1,2-cyclohexanediaminetetraacetic acid), dtpa (diethyl- enetriaminepentaacetic acid), ttha (triethylenetetraaminehexaacetic acid) and so on. The coordination laws and coordinate structure changes of these complexes are found and the results show that the coordination numbers and coordinate structures of rare earth metal complexes with aminopoly- carboxylic acid ligands, like the transition metal complexes, depend on the ionic radius and electronic configuration of the central rare earth metal ions, the ligand shape and countercation.更多还原