八配位钇(Ⅲ)-反式-1,2-环己二胺四乙酸配合物NH_4[Y(trans-CYDTA)(H_2O)_2]·4.5H_2O的合成及分子结构  

Synthesis and Molecular Structure of Eight Coordinate Complex NH_4[Y(trans-CYDTA)(H_2O)_2]·4.5H_2O

作　　者：王君[1] 张向东[1] 范大民[1] 领小[1] 

机构地区：[1]辽宁大学化学系,沈阳110036

出　　处：《无机化学学报》2001年第5期755-759,共5页Chinese Journal of Inorganic Chemistry

基　　金：辽宁省科委自然科学基金资助项目(No.9810300901)。

摘　　要：In this paper, the molecular and crystal structures of the NH4[Y(trans CYDTA)(H2O)2]· 4.5 H2O(trans CYDTA=trans 1,2 cyclohexanediaminetetraacetic acid) are reported. The crystal data are as follows: Triclinic system, space group,a=0.8599(6)nm,b=1.0021(7)nm,c=1.4370(9)nm,α =88.095(13)° ,β =75.559(1)° ,γ =88.344(12)° ,V=1.1981(14)nm3,Z=2, M=708.68,Dc=1.570g· cm- 3, μ =2.506mm- 1 and F(000)=590. The final R1 and wR2 are 0.0571 and 0.1350 for 4205 [I >2.0σ (I)] unique reflections and 0.1007 and 0.1615 for all 4981 reflections, respectively. In the title complex, the anion [Y(trans CYDTA)(H2O)2]- has an eight coordination structure with distorted square antiprism. The trans CYDTA which acts as a hexadentate ligand with four O atoms and two N atoms and two H2O molecules directly coordinate to central metal Y? ion. It can be known that the Y? ion can form an eight coordinate compound with aminopolycarboxylic acid ligands in addition nine coordination structure.In this paper, the molecular and crystal structures of the NH4[Y(trans CYDTA)(H2O)2]· 4.5 H2O(trans CYDTA=trans 1,2 cyclohexanediaminetetraacetic acid) are reported. The crystal data are as follows: Triclinic system, space group,a=0.8599(6)nm,b=1.0021(7)nm,c=1.4370(9)nm,α =88.095(13)° ,β =75.559(1)° ,γ =88.344(12)° ,V=1.1981(14)nm3,Z=2, M=708.68,Dc=1.570g· cm- 3, μ =2.506mm- 1 and F(000)=590. The final R1 and wR2 are 0.0571 and 0.1350 for 4205 [I >2.0σ (I)] unique reflections and 0.1007 and 0.1615 for all 4981 reflections, respectively. In the title complex, the anion [Y(trans CYDTA)(H2O)2]- has an eight coordination structure with distorted square antiprism. The trans CYDTA which acts as a hexadentate ligand with four O atoms and two N atoms and two H2O molecules directly coordinate to central metal Y? ion. It can be known that the Y? ion can form an eight coordinate compound with aminopolycarboxylic acid ligands in addition nine coordination structure.

关 键 词：反式-1 2-环己二胺四乙酸 trans-CYDTA 合成 配合物 分子结构 钇(Ⅲ)配合物 放射性抗肿瘤药物 

分 类 号：TQ463.6[化学工程—制药化工]