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

被引：6

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

页码：8591 / 8596

页数：6

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