Fluoride-bridged dinuclear dysprosium complex showing single-molecule magnetic behavior : supramolecular approach to isolate magnetic molecules

Wu, Dong-Fang; Takahashi, Kiyonori; Fujibayashi, Masaru et al.

RSC advances, 2022, 12(33), 21280-21286

Permalink : https://hdl.handle.net/2115/86623

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https://doi.org/10.1039/d2ra04119g     23

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アクセス権
open access
URI
https://hdl.handle.net/2115/86623
タイトル
Fluoride-bridged dinuclear dysprosium complex showing single-molecule magnetic behavior : supramolecular approach to isolate magnetic molecules
著者
Wu, Dong-Fang ; Takahashi, Kiyonori ; Fujibayashi, Masaru ; Tsuchiya, Naoto ; Cosquer, Goulven ; Huang, Rui-Kang ; Xue, Chen ; Nishihara, Sadafumi ; Nakamura, Takayoshi
著者名
Wu, Dong-Fang
著者名
Takahashi, Kiyonori
著者名
Fujibayashi, Masaru
著者名
Tsuchiya, Naoto
著者名
Cosquer, Goulven
著者名
Huang, Rui-Kang
著者名
Xue, Chen
著者名
Nishihara, Sadafumi
e-Rad_Researcher
60270790
著者名
Nakamura, Takayoshi
言語
英語
発行日
2022-08-02
出版者
Royal Society of Chemistry
収録物名
RSC advances
巻(号)
12(33)
ページ
21280-21286
抄録
Using Na-encapsulated benzo[18]crown-6 (Na)(B18C6) as a counter cation, we successfully magnetically isolated a fluoride-bridging Dy dinuclear complex {[(PW11O39)Dy(H2O)(2)](2)F} (Dy2POM) with lacunary Keggin ligands. (Na)(B18C6) formed two types of tetramers through C-HMIDLINE HORIZONTAL ELLIPSISO, pi MIDLINE HORIZONTAL ELLIPSIS pi and C-HMIDLINE HORIZONTAL ELLIPSIS pi interactions, and each tetramer aligned in one dimension along the c-axis to form two types of channels. One channel was partially penetrated by a supramolecular cation from the +/- a-axis direction, dividing the channel in the form of a bamboo node. Dy2POM was spatially divided by this bamboo node, which magnetically isolated one portion from the other. The temperature dependence of the magnetic susceptibility indicated a weak ferromagnetic interaction between the Dy ions bridged by fluoride. Dy2POM exhibited the magnetic relaxation characteristics of a single-molecule magnet, including the dependence of AC magnetic susceptibility on temperature and frequency. Magnetic relaxation can be described by the combination of thermally active Orbach and temperature-independent quantum tunneling processes. The application of a static magnetic field effectively suppressed the relaxation due to quantum tunneling.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
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出版社版DOI
https://doi.org/10.1039/d2ra04119g