2024-03-29T01:44:30Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/866232022-11-17T02:08:08Zhdl_2115_20057hdl_2115_148Fluoride-bridged dinuclear dysprosium complex showing single-molecule magnetic behavior : supramolecular approach to isolate magnetic moleculesWu, Dong-FangTakahashi, KiyonoriFujibayashi, MasaruTsuchiya, NaotoCosquer, GoulvenHuang, Rui-KangXue, ChenNishihara, SadafumiNakamura, Takayoshi420Using 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.Royal Society of ChemistryJournal Articlehttp://hdl.handle.net/2115/86623RSC advances123321280212862022-08-02enginfo:doi/10.1039/d2ra04119gnone