On Approaching The Limit of Molecular Magnetic Anisotropy: A Near-Perfect Pentagonal Bipyramidal DyIII Single-Molecule Magnet

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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].

Bibliographical metadata

Original languageEnglish
Pages (from-to)16071-16074
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number52
Early online date22 Nov 2016
Publication statusPublished - 21 Dec 2016

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