Issue 19, 2021

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

Abstract

Two mononuclear seven-coordinate Dy(III) complexes [Dy(TPA)Cl3] (1) and [Dy(TPA)(OPhCl2NO2)3]·0.5CH2Cl2 (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 Cl2NO2PhOversus Cl, leading to a larger magnetic anisotropy of 2 as compared to 1.

Graphical abstract: Tuning the ligand field in seven-coordinate Dy(iii) complexes to perturb single-ion magnet behavior

Supplementary files

Article information

Article type
Paper
Submitted
12 Feb 2021
Accepted
13 Apr 2021
First published
13 Apr 2021

New J. Chem., 2021,45, 8591-8596

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

C. Zhang, Z. Cheng, P. Tan, W. Lv, H. Cui, L. Chen, X. Cai, Y. Zhao and A. Yuan, New J. Chem., 2021, 45, 8591 DOI: 10.1039/D1NJ00734C

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