Effect of the Ligand Field Geometry on the Slow Magnetization Relaxation in Mononuclear Dysprosium Complexes
Effect of the Ligand Field Geometry on the Slow Magnetization Relaxation in Mononuclear Dysprosium Complexes
复制标题
配体场几何形状对单核镝配合物慢磁化弛豫的影响
DOI：
10.1166/sam.2018.3287
复制
发表时间：
2018-09
影响因子：
0.9
通讯作者：
Zhang Yi-Quan
中科院分区：
文献类型：
--
作者：
Chen Lei;Yuan Aihua;Wang Meng;Zhou Hu;Zhou Hongbo;Song You;Zhang Yi-Quan
两个单核配合物含有Dy（III）离子与八和九坐标环境已成功地合成和结构特征的单晶X-射线晶体学。配合物1和2的配位球具有畸变球帽正方反棱柱和正方反棱柱几何构型。磁性测量表明，两种配合物均表现出典型的单分子磁性，只有配合物2表现出蝴蝶磁滞回线。从头计算还显示了1和2中Dy（III）离子的磁各向异性的差异。讨论了配合物的配位几何与磁性的关系。
Two mononuclear complexes containing a Dy(III) ion with eight- and nine-coordinate environments have been successfully synthesized and structurally characterized by single-crystal X-ray crystallography. The coordination spheres of 1 and 2 exhibit the distorted spherical capped square antiprism and square antiprism geometries. Magnetic measurements reveal that both of the complexes show typical single-molecule magnetic behavior, and only complex 2 presents a butterfly hysteresis loop. Ab initio calculations also show the difference of the magnetic anisotropy of the Dy(III) ions in 1 and 2. The relationship between the coordination geometry and the magnetic property is discussed.