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在前文的基础上,本文继续综述了氨基多羧酸类-dtpa和ttha配体与一系列稀土金属离子形成配合物的分子结构和配位结构。发现了dtpa和ttha配体与稀土金属离子的配位规律和结构变化规律。研究结果表明,稀土金属离子与dtpa和ttha配体形成配合物的配位数和配位结构明显地取决于稀土金属离子的离子半径,电子结构和氧化态以及配体的形状。
Based on the above, this paper reviews the molecular structure and coordination structure of complexes of amino polycarboxylates -dtpa and ttha with a series of rare earth metal ions. The coordination rules and structural changes of the complexes of dtpa and ttha with rare earth metal ions were found. The results show that the coordination number and coordination structure between rare earth metal ions and dtpa and ttha ligands obviously depend on the ionic radius, electronic structure and oxidation state of the rare earth metal ions and the shape of the ligands.