A Trigonal‐Pyramidal Erbium(III) Single‐Molecule Magnet1. Issue 20 (24th March 2015)

• Record Type: Journal Article
• Authors: Brown, Andrew J.; Pinkowicz, Dawid; Saber, Mohamed R.; Dunbar, Kim R.
• Is Part Of: Angewandte Chemie international edition. Volume 54:Issue 20(2015)
• Page Start: 5864
• Page End: 5868
• Publication Date: 2015-03-24
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201411190
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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)₄[Er{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 (Δ<italic>E</italic>_eff/<italic>k</italic>_B=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.</p> </abstract>