Unprecedented Octanuclear DyIII Cluster Exhibiting Single-Molecule Magnet Behavior
| Autor: | Muralee Murugesu, Rebecca J. Holmberg, Bulat Gabidullin, Thomas Lacelle, Gabriel Brunet |
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| Rok vydání: | 2017 |
| Předmět: |
010405 organic chemistry
Oxide General Chemistry 010402 general chemistry Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Crystallography Magnetization symbols.namesake chemistry Cubane Magnet symbols Moiety General Materials Science Single-molecule magnet Raman spectroscopy Quantum tunnelling |
| Zdroj: | Crystal Growth & Design. 17:5044-5048 |
| ISSN: | 1528-7505 1528-7483 |
| Popis: | An unprecedented Dy8 cluster, [Dy8(μ4-O)(μ3-OH)8(vht)4(NO3)2(H2O)8](NO3)4, composed of two fused and distorted [Dy4(μ3-OH)4]8+ cubane units is reported. The bridging of the two cubanes occurs through a planar μ4-O (oxide) moiety, and leads to the largest reported distortion of the Dy-O-Dy angles within a [Dy4(OH)4] cubane core. In turn, this leads to clear zero-field slow relaxation of the magnetization, characteristic of single-molecule magnets (SMMs). Further magnetic analyses suggest that the relaxation may be largely dictated by quantum tunneling of the magnetization and Raman processes. |
| Databáze: | OpenAIRE |
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