Tuning slow magnetic relaxation behaviour in a {Dy2}-based one-dimensional chain via crystal field perturbation

Shui Yu; Qinhua Zhang; Huancheng Hu; Zilu Chen; Dongcheng Liu; Yuning Liang; Fupei Liang

doi:10.1039/D0RA01604G

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Tuning slow magnetic relaxation behaviour in a {Dy₂}-based one-dimensional chain via crystal field perturbation†

Shui Yu,^a Qinhua Zhang,^c Huancheng Hu,*^a Zilu Chen,

*^a Dongcheng Liu,^a Yuning Liang^a and Fupei Liang

*^ab

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* Corresponding authors

^a State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P. R. China
E-mail: zlchen@mailbox.gxnu.edu.cn, siniantongnian@126.com, fliangoffice@yahoo.com

^b Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P. R. China

^c State Key Laboratory of Heavy Oil Processing, Institute of New Energy, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China

Abstract

Two novel {Dy₂}-based one dimensional chain compounds {[Dy₂(H₃L)₄(OAc)₆]·2MeOH}_n (1) and {[Dy₂(H₃L)₄(OAc)₄(NCS)₂]·2MeOH}_n (2) (H₃L = 1,3-bis(2-hydroxynaphthalenemethyleneamino)-propan-2-ol) have been prepared under solvothermal conditions. Crystal structure analyses indicate that 1 and 2 feature similar 1D chain structures bearing dinuclear secondary building units. The difference between these two structures is that one chelated acetate ligand of Dy(III) ion in 1 is replaced by one monodentate coordinated NCS⁻ ion in 2, leading to their different coordination numbers and geometry configurations to Dy(III) ion. Magnetic properties indicate that 1 and 2 display slow magnetic relaxation behavior with an effective energy barrier of 16.44(2) K in 1 and 8.02(2) K in 2, respectively, which is maybe attributed to the subtle crystal field perturbation of Dy(III) ions.

This article is part of the themed collection: Shining a Light on the f-Block

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DOI: https://doi.org/10.1039/D0RA01604G
Article type: Paper
Submitted: 19 Feb 2020
Accepted: 10 Mar 2020
First published: 24 Mar 2020
This article is Open Access

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RSC Adv., 2020,10, 11831-11835

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Tuning slow magnetic relaxation behaviour in a {Dy₂}-based one-dimensional chain via crystal field perturbation

S. Yu, Q. Zhang, H. Hu, Z. Chen, D. Liu, Y. Liang and F. Liang, RSC Adv., 2020, 10, 11831 DOI: 10.1039/D0RA01604G

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