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Issue 11, 2018
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Investigation of magneto-structural correlation based on a series of seven-coordinated β-diketone Dy(iii) single-ion magnets with C2v and C3v local symmetry

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Abstract

A series of four β-diketone mononuclear Dy(III) complexes, namely Dy(Hthd)3(MeOH)·2,5-Py (1), Dy(Hthd)3(Tppo) (2), Dy(Hthd)3(PyNO) (3), and Dy(Hthd)3(4-PyNO) (4) (Hthd = 2,2,6,6-tetramethyl-3,5-heptanedione, 2,5-Py = 2,5-pyridine, Tppo = triphenylphosphine oxide, PyNO = pyridine N-oxide, 4-PyNO = 4-methylpyridine N-oxide), have been isolated by reactions of Hthd, DyCl3·6H2O and an auxiliary ligand. X-ray crystallographic analysis revealed that complexes 1–4 are all seven-coordinated mononuclear structures with C2v or C3v local symmetry. The magnetic measurements of complexes 1–4 revealed their field-induced single-ion magnet (SIM) behavior, due to mixed low-lying states. The crystal field parameters and orientations of the magnetic easy axes were obtained from simulations of the DC magnetic data and an electrostatic model calculation. The magneto-structural correlation of seven-coordinated Dy(III) SIMs with low-symmetry coordination environments was further discussed.

Graphical abstract: Investigation of magneto-structural correlation based on a series of seven-coordinated β-diketone Dy(iii) single-ion magnets with C2v and C3v local symmetry

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Article information


Submitted
18 Dec 2017
Accepted
06 Feb 2018
First published
06 Feb 2018

Dalton Trans., 2018,47, 3976-3984
Article type
Paper

Investigation of magneto-structural correlation based on a series of seven-coordinated β-diketone Dy(III) single-ion magnets with C2v and C3v local symmetry

X. Yao, P. Yan, G. An, Y. Li, W. Li and G. Li, Dalton Trans., 2018, 47, 3976
DOI: 10.1039/C7DT04764A

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