Tuning the ligand field in seven-coordinate Dy(III) complexes to perturb single-ion magnet behavior

被引：5
|
作者：
Zhang, Chunyang [1 ]
Cheng, Zhijie [1 ]
Tan, Pengfei [1 ]
Lv, Wei [2 ]
Cui, Huihui [3 ]
Chen, Lei [1 ]
Cai, Xingwei [1 ]
Zhao, Yuyuan [4 ]
Yuan, Aihua [1 ]
机构：
[1] Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China
[2] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem, Nanjing 210093, Peoples R China
[3] Nantong Univ, Sch Chem & Chem Engn, Nantong 226019, Peoples R China
[4] Zhenjiang Coll, Sch Med Technol, Zhenjiang 212003, Jiangsu, Peoples R China
来源：
NEW JOURNAL OF CHEMISTRY | 2021年 / 45卷 / 19期
关键词：
MOLECULE MAGNETS; ANISOTROPY BARRIER; RELAXATION; MAGNETIZATION; DYSPROSIUM(III); SYMMETRY; 3D; DYNAMICS; SHAPE;
D O I：
10.1039/d1nj00734c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Two mononuclear seven-coordinate Dy(iii) complexes [Dy(TPA)Cl-3] (1) and [Dy(TPA)(OPhCl2NO2)(3)]center dot 0.5CH(2)Cl(2) (2) have been synthesized based on the neutral ligand tris[(2-pyridyl)methyl]amine (TPA) and either the strong strength ligand 2,6-dichloro-4-nitrophenol (Cl2NO2PhOH) or the weak ligand field donor Cl-. The Dy(iii) centers in compexes 1 and 2 have seven-coordinated capped octahedral and capped trigonal prismatic coordination geometries, respectively. Magnetic investigations showed that both complexes display field-induced slow magnetic relaxation. The energy barrier for 2 is higher than that of 1, which is due to the strong ligand field of Cl(2)NO(2)PhO(-)versus Cl-, leading to a larger magnetic anisotropy of 2 as compared to 1.
引用
收藏
页码：8591 / 8596
页数：6
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