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Fluoride-bridged dinuclear dysprosium complex showing single-molecule magnetic behavior : supramolecular approach to isolate magnetic molecules
| Title: | Fluoride-bridged dinuclear dysprosium complex showing single-molecule magnetic behavior : supramolecular approach to isolate magnetic molecules |
| Authors: | Wu, Dong-Fang Browse this author | | Takahashi, Kiyonori Browse this author | | Fujibayashi, Masaru Browse this author | | Tsuchiya, Naoto Browse this author | | Cosquer, Goulven Browse this author | | Huang, Rui-Kang Browse this author | | Xue, Chen Browse this author | | Nishihara, Sadafumi Browse this author | | Nakamura, Takayoshi Browse this author →KAKEN DB |
| Issue Date: | 2-Aug-2022 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | RSC advances |
| Volume: | 12 |
| Issue: | 33 |
| Start Page: | 21280 |
| End Page: | 21286 |
| Publisher DOI: | 10.1039/d2ra04119g |
| Abstract: | 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. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/86623 |
| Appears in Collections: | 電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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