title: A Trigonal-Pyramidal Erbium(III) Single-Molecule Magnet.
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)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 (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.
authors: Department of Chemistry, Texas A&M University, College Station, TX 77843 (USA) http://www.chem.tamu.edu/rgroup/dunbar/
authors: Andrew J
authors: AJ
authors: Brown
authors: Dawid
authors: D
authors: Pinkowicz
authors: Mohamed R
authors: MR
authors: Saber
authors: Kim R
authors: KR
authors: Dunbar
keywords: erbium; magnetic hysteresis; mononuclear; prolate lanthanides; single-molecule magnets