九配位钇(Ⅲ)-氨三乙酸配合物K3[Y(NTA)2(H2O)]·6H2O的合成及分子结构

In this paper we describe the molecular and crystal structures of the K₃Y(NTA)₂(H₂O)]· 6H₂O(H₃NTA=nitrilotriacetic acid). The crystal data are as followsmonoclinic system, C2/c space group, a=1.5268(3)nm,b=1.2833(3)nm,c=2.6079(5)nm,β =96.03(3)°,V=5.0815(18)nm³,Z=8,M=708.68,Dc=1.852gcm^-3,μ =2.875mm^-1,F(000)=2880.The final R1 and wR2 are 0.0636 and 0.1523 for 4264 I >2.0σ (I)] unique reflections and 0.1178 and 0.1651 for all 4364 reflections,respectively.In the title complex, the anion Y(NTA)₂(H₂O)]^3- has a nine-coordination structure with distorted monocapped square antiprism. Each group acts as a tetradentate ligand with three Oatoms and one Natom and a H₂O molecule caps a quadrilateral face as a ligand.It can be known that the Y(Ⅲ) ion can form a high-coordinate compound with aminopolycarboxylic acid ligands because it has a larger ionic radius (0.104nm).

Synthesis and Molecular Structure of Nine-Coordinate Complex K3 [Y (NTA)2 (H2O)]·6H2O

In this paper we describe the molecular and crystal structures of the K3Y(NTA)2(H2O)] · 6H2O(H3NTA = nitrilotriacetic acid). The crystal data are as follows: monoclinic system, C2/c space group, a=1.5268(3) nm, b=1.2833(3) nm, c=2.6079(5) nm, 3=96.03(3)°, V= 5. 0815(18)nm3, Z =8, M=708.68, Dc = 1. 852gcm-3,μ=2. 875mm-1, F(000) =2880. The final R1 and wR2 are 0. 0636 and 0. 1523 for 4264 Ⅰ> 2.Oσ(Ⅰ)] unique reflections and 0. 1178 and 0. 1651 for all 4364 reflections, respectively. In the title complex, the anion Y(NTA) 2(H2O)] 3-has a nine-coordination structure with distorted monocapped square antiprism. Each group acts as a tetradentate ligand with three O atoms and one N atom and a H2O molecule caps a quadrilateral face as a ligand. It can be known that the Y (Ⅲ) ion can form a high-coordinate compound with aminopolycarboxylic acid ligands because it has a larger ionic radius (0.104nm).