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- Title
On Approaching the Limit of Molecular Magnetic Anisotropy: A Near-Perfect Pentagonal Bipyramidal Dysprosium(III) Single-Molecule Magnet.
- Authors
Ding, You-Song; Chilton, Nicholas F.; Winpenny, Richard E. P.; Zheng, Yan-Zhen
- Abstract
We report a monometallic dysprosium complex, [Dy(OtBu)2(py)5][BPh4] ( 5), that shows the largest effective energy barrier to magnetic relaxation of Ueff=1815(1) K. The massive magnetic anisotropy is due to bis-trans-disposed tert-butoxide ligands with weak equatorial pyridine donors, approaching proposed schemes for high-temperature single-molecule magnets (SMMs). The blocking temperature, TB , is 14 K, defined by zero-field-cooled magnetization experiments, and is the largest for any monometallic complex and equal with the current record for [Tb2N2{N(SiMe3)2}4(THF)2].
- Subjects
MOLECULAR magnetic moments; ANISOTROPY; DYSPROSIUM compounds; SINGLE molecule magnets; MAGNETIC relaxation
- Publication
Angewandte Chemie International Edition, 2016, Vol 55, Issue 52, p16071
- ISSN
1433-7851
- Publication type
Article
- DOI
10.1002/anie.201609685