Lanthanide contraction and anions-controlled dimensional diversity in LnCuNTA (Ln=lanthanide, H3NTA=nitrilotriacetic acid) coordination polymers: crystal structure and magnetic properties
作者:Qin-De Liu、Song Gao、Jun-Ran Li、Bao-Qing Ma、Qing-Zhong Zhou、Kai-Bei Yu
DOI:10.1016/s0277-5387(02)00911-7
日期:2002.5
(2–4, 4′–6, and 7–11), as controlled by lanthanide contraction and mixed anions Cl− and ClO4 −, which were found to play a crucial role in the formation and stabilization of this series of LnCu polymers. Temperature-dependent magnetic susceptibilities for 1, 3, 4, 5 and 8 were studied. 1 shows a weak ferromagnetic-like behavior, whereas the others exhibit an overall antiferromagnetic feature.
摘要合成了一系列具有次氮基三乙酸的镧系元素-铜配位聚合物[LnCuCl(NTA)(H2O)6] ClO4·H2O [LnLa(1),Ce(2),Pr(3),Gd (4,4'),Tb(5)和Dy(6)]和[LnCuCl(NTA)(H2O)6] ClO4·3H2O [LnHo(7),Er(8),Tm(9),Lu (10)和Y(11)]在水溶液中。确定了1、4、4',8、11的晶体结构,并确定了其他晶体的同构关系。事实证明,它们是多种多样的,范围从1的二维(2D)阵列到三种不同类型(2-4、4'-6和7-11)的一维(1D)链,受控制镧系元素的收缩和混合阴离子Cl-和ClO4-在这一系列LnCu聚合物的形成和稳定中起着至关重要的作用。研究了1、3、4、5和8随温度变化的磁化率。