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Issue 20, 2020
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Modulation of magnetic relaxation behaviors via replacing coordinated solvents in a series of linear tetranuclear Dy4 complexes

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Abstract

Four linear tetranuclear dysprosium compounds, [Dy4(L)2(dbm)6(ROH)2x(ROH) (ROH = MeOH, x = 3 (1); ROH = EtOH, x = 3 (2); ROH = n-PrOH, x = 1 (3); ROH = n-BuOH, x = 1 (4); H3L = N′-(2,3-dihydroxybenzylidene)-2-(6-hydroxymethyl)-pyridine carboxylic acid hydrazide, Hdbm = 1,3-diphenyl-1,3-propanedione) were successfully assembled via controlling the reaction solvents in the synthesis process. Structural analysis reveals that these four compounds possess a similar linear Dy4 core but with different solvents coordinated to the central Dy(III) sites (MeOH for 1, EtOH for 2, n-PrOH for 3 and n-BuOH for 4). Detailed magnetic investigation reveals that 1–4 display different magnetic relaxation behaviors with the energy barrier (ΔE/kB) values of 53.58 K for 1, 1.23 K for 2, 1.11 K for 3 and 0.65 K for 4. This study highlights the important role of solvent effects in modulating the structures and magnetic properties of multinuclear Dy-based single-molecule magnets.

Graphical abstract: Modulation of magnetic relaxation behaviors via replacing coordinated solvents in a series of linear tetranuclear Dy4 complexes

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Supplementary files

Article information


Submitted
13 Apr 2020
Accepted
04 May 2020
First published
04 May 2020

New J. Chem., 2020,44, 8494-8502
Article type
Paper

Modulation of magnetic relaxation behaviors via replacing coordinated solvents in a series of linear tetranuclear Dy4 complexes

W. Wang, X. Hu, Y. Yang, J. Zhao, Y. Zhang, X. Kang and Z. Wu, New J. Chem., 2020, 44, 8494
DOI: 10.1039/D0NJ01830A

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