Modulation of the magnetic dynamics in two air-stable sulfur-ligated dysprosium complexes via polymerization

Two air-stable sulfur-ligated dysprosium(III) complexes [HN(Et) ][Dy NaL ] (1) and [DyNaL (MeOH) (H O) ] (2) based on 2-pyridinethiol 1-oxide (HL) were synthesized and structurally characterized. Discrete 1 and polymeric 2 share the same anionic unit of [DyL ] with the O S coordination environment,...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2023-06, Vol.52 (22), p.7551-7557
Main Authors: Han, Tian, Wang, Xiao-Qin, Guo, Tong, Cao, Hong-Sheng, Chen, Wei-Peng, He, Ling
Format: Article
Language:English
Subjects:
Dysprosium
Modulation
Sulfur
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Summary:Two air-stable sulfur-ligated dysprosium(III) complexes [HN(Et) ][Dy NaL ] (1) and [DyNaL (MeOH) (H O) ] (2) based on 2-pyridinethiol 1-oxide (HL) were synthesized and structurally characterized. Discrete 1 and polymeric 2 share the same anionic unit of [DyL ] with the O S coordination environment, but differ in the precise geometry with triangular dodecahedron geometry in 1 and biaugmented trigonal prism geometry in 2. The subtle change leads to observable temperature-independent relaxation for 2 while a faster relaxation with invisible peak for 1 at zero dc field. Under an optimal dc field, both display the typical Raman process with a smaller pre-factor and higher exponent for 2. calculations reveal that the predicted energy barriers are 287 cm for 1 and 303 cm for 2. These results demonstrate the construction and magnetic modulation of air-stable sulfur-ligated Dy-SMM architectures.
ISSN:1477-9226
1477-9234
DOI:10.1039/d3dt00714f