Construction of lanthanide single-molecule magnets with the “magnetic motif” [Dy(MQ)4]−

Deng-Ping Lyu; Jie-Yu Zheng; Quan-Wen Li; Jun-Liang Liu; Yan-Cong Chen; Jian-Hua Jia; Ming-Liang Tong

doi:10.1039/C7QI00393E

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Construction of lanthanide single-molecule magnets with the “magnetic motif” [Dy(MQ)₄]⁻†

Deng-Ping Lyu,‡^a Jie-Yu Zheng,‡^a Quan-Wen Li,^a Jun-Liang Liu,

^a Yan-Cong Chen,

^a Jian-Hua Jia

*^a and Ming-Liang Tong

*^a

Author affiliations

* Corresponding authors

^a Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, 510275 Guangzhou, P. R. China
E-mail: jiajh3@mail.sysu.edu.cn, tongml@mail.sysu.edu.cn

Abstract

A dinuclear complex (HNEt₃)[Dy₂(MQ)₄(NO₃)₃]·EtOH·H₂O (HMQ = 2-methyl-8-hydroxyquinoline) was prepared and proved to have no observable single-molecule magnet (SMM) behaviour. With increasing NEt₃ in the reaction, two coordinated NO₃⁻ units in the {(NO₃)₃} pocket were replaced by an additional “magnetic motif” [Dy(MQ)₄]⁻. In this way, the unfavourable interactions between the two dysprosiums were diminished and a trinuclear complex [Dy₃(MQ)₈(NO₃)] was obtained, which behaves as an SMM with an efficient energy barrier of 244(21) K for the full temperature range and 150(12) K for the high-temperature region. It is suggested that introduction of a “magnetic motif” is a feasible strategy for modulating the magnetic behaviour of polynuclear systems.

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Article information

DOI: https://doi.org/10.1039/C7QI00393E
Article type: Research Article
Submitted: 08 Jul 2017
Accepted: 18 Sep 2017
First published: 19 Sep 2017

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Inorg. Chem. Front., 2017,4, 1776-1782

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Construction of lanthanide single-molecule magnets with the “magnetic motif” [Dy(MQ)₄]⁻

D. Lyu, J. Zheng, Q. Li, J. Liu, Y. Chen, J. Jia and M. Tong, Inorg. Chem. Front., 2017, 4, 1776 DOI: 10.1039/C7QI00393E

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