1. Field-induced Co(II) single-ion magnet in octahedral [S6] coordination environment.
- Author
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Zhou, Yang, Yao, Run-Zhuo, Cai, Xingwei, Wang, Zhenxing, Cen, Peipei, Yang, Yong, Yuan, Aihua, Tang, Yisong, Chen, XiaoYun, Zhang, Shuanhong, Ouyang, Zhong-Wen, and Chen, Lei
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SINGLE molecule magnets , *LIGAND field theory , *MAGNETIC anisotropy , *ELECTRON paramagnetic resonance , *MAGNETS , *SUPERCONDUCTING magnets - Abstract
• A soft tripodal ligand was used to construct a high-spin Co(II) complex with weak ligand field. • HFEPR and magnetic data reveal easy-axis anisotropy and SMM's behavior for this complex. • This complex is the first instance of Co(II)-based single-ion magnet with an octahedral CoS 6 unit. The soft donor ligands are of great importance to the pursuit of 3d transition-metal complexes with large magnetic anisotropy. Herein, a soft tripodal ligand, hydrotris(mercaptobenzothiazolyl)borate (Tbz) was used to construct a high-spin mononuclear complex [CoII(Tbz) 2 ] (1), having an octahedral geometry in an S 6 donor set. The combination of direct-current (dc) magnetic susceptibility and Low-temperature high-field electron paramagnetic resonance (HFEPR) reveals the easy-axis magnetic anisotropy of 1. Complex 1 shows field-induced slow relaxation of magnetization at an applied magnetic field of 1000 Oe, indicating the behavior of single-molecule magnet. The foregoing result constitutes the first instance of Co(II)-based single-ion magnet containing a CoS 6 unit. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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