A mononuclear dysprosium(III) single-molecule magnet with a non-planar metallacrown

Xiao-Feng Jiang; Ming-Guang Chen; Jia-Ping Tong; Feng Shao

doi:10.1039/C9NJ01662G

A mononuclear dysprosium(iii) single-molecule magnet with a non-planar metallacrown†

Xiao-Feng Jiang,‡^ab Ming-Guang Chen,‡^bc Jia-Ping Tong

^bd and Feng Shao

§*^b

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* Corresponding authors

^a School of Information Science and Engineering, Fujian University of Technology, Fuzhou 350118, P. R. China

^b State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
E-mail: fengshao@outlook.com

^c Baotou Research Institute of Rare Earths, Baotou 014040, P. R. China

^d Lab of Chemical Materials and Devices, Training Base of Army Logistics University of PLA, Xiangyang 441000, P. R. China

Abstract

A mononuclear dysprosium(III)/gallium(III) metallacrown complex, {[DyGa₄(Hnha)₂(nha)₄(NO₃)(C₅H₅N)₄](C₅H₆N)₂}·(H₂O)₁₀ (1·H₂O), was synthesized with a hydroxamic ligand: 3-hydroxy-2-napthanoic hydroxamic acid (H₃nha). Meanwhile, the molecular structure was confirmed by single-crystal X-ray diffraction analysis, and the Dy^III centre is nine-coordinate and adopts a distorted tricapped trigonal prism coordination geometry as indicated by continued shape measurements (CShM) SHAPE analysis. In addition, the dynamic magnetization studies revealed that complex 1 displayed field-induced single-molecule magnet behaviour with an effective energy barrier U_eff = 26.4 K and pre-exponential factor τ₀ = 2.2 × 10⁻⁶ s.

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DOI: https://doi.org/10.1039/C9NJ01662G
Article type: Paper
Submitted: 01 Apr 2019
Accepted: 04 May 2019
First published: 06 May 2019

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New J. Chem., 2019,43, 8704-8710

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A mononuclear dysprosium(III) single-molecule magnet with a non-planar metallacrown

X. Jiang, M. Chen, J. Tong and F. Shao, New J. Chem., 2019, 43, 8704 DOI: 10.1039/C9NJ01662G

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New Journal of Chemistry

A mononuclear dysprosium(iii) single-molecule magnet with a non-planar metallacrown†

Abstract

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A mononuclear dysprosium(III) single-molecule magnet with a non-planar metallacrown

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