A Trigonal‐Pyramidal Erbium(III) Single‐Molecule Magnet |
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| Authors: | Andrew J Brown Dr Dawid Pinkowicz Dr Mohamed R Saber Prof Kim R Dunbar |
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| Institution: | 1. Department of Chemistry, Texas A&M University, College Station, TX 77843 (USA) http://www.chem.tamu.edu/rgroup/dunbar/;2. Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30‐060 Kraków (Poland);3. Permanent address: Department of Chemistry, Fayoum University, Fayoum 63514 (Egypt) |
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| Abstract: | Given the recent advent of mononuclear single‐molecule magnets (SMMs), a rational approach based on lanthanides with axially elongated f‐electron charge cloud (prolate) has only recently received attention. We report herein a new SMM, Li(THF)4Er{N(SiMe3)2}3Cl]?2 THF, which exhibits slow relaxation of the magnetization under zero dc field with an effective barrier to the reversal of magnetization (ΔEeff/kB=63.3 K) and magnetic hysteresis up to 3 K at a magnetic field sweep rate of 34.6 Oe s?1. This work questions the theory that oblate or prolate lanthanides must be stabilized with the appropriate ligand framework in order for SMM behavior to be favored. |
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| Keywords: | erbium magnetic hysteresis mononuclear prolate lanthanides single‐molecule magnets |
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