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Issue 4, 2019
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Multiple magnetic relaxation pathways in T-shaped N-heterocyclic carbene-supported Fe(i) single-ion magnets

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Abstract

The magnetic properties of the T-shaped three-coordinate complexes, namely, [(sIMes)2Fe(THF)][BPh4] (1, sIMes: 1,3-bis(2′,4′,6′-trimethylphenyl)-imidazolin-2-ylidene) and [(cyIMes)2Fe(THF)][BPh4] (2, cyIMes: 1,3-bis(2′,4′,6′-diethylphenyl)-4,5-(CH2)4-imidazol-2-ylidene) and quasi-linear two-coordinate complexes [(sIDep)2Fe][BArF4] (3, sIDep: 1,3-bis(2′,6′-diethylphenyl)-imidazolin-2-ylidene; ArF: 3,5-di(trifluoromethyl)phenyl) and [(cyIDep)2Fe][BArF4] (4, cyIDep: 1,3-bis(2′,6′-diethylphenyl)-4,5-(CH2)4-imidazol-2-ylidene) were studied. Magnetic characterization indicated the unquenched first-order angular momentum and large zero-field splitting. AC susceptibility measurements showed that the T-shaped three-coordinate Fe(I) complexes exhibited field-induced relaxation of magnetization. The Direct, resonant quantum tunneling, and Raman processes were observed and contributed to the determination of the overall magnetic relaxations.

Graphical abstract: Multiple magnetic relaxation pathways in T-shaped N-heterocyclic carbene-supported Fe(i) single-ion magnets

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Supplementary files

Article information


Submitted
17 Jan 2019
Accepted
04 Mar 2019
First published
07 Mar 2019

Inorg. Chem. Front., 2019,6, 1050-1057
Article type
Research Article

Multiple magnetic relaxation pathways in T-shaped N-heterocyclic carbene-supported Fe(I) single-ion magnets

Y. Meng, Z. Ouyang, M. Yang, Y. Zhang, L. Deng, B. Wang and S. Gao, Inorg. Chem. Front., 2019, 6, 1050
DOI: 10.1039/C9QI00073A

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