ic9b01831_si_001.pdf (2.55 MB)
Photochemically Tuned Magnetic Properties in an Erbium(III)-Based Easy-Plane Single-Molecule Magnet
journal contribution
posted on 2019-10-18, 16:39 authored by Jing Li, Ming Kong, Lei Yin, Jing Zhang, Fei Yu, Zhong-Wen Ouyang, Zhenxing Wang, Yi-Quan Zhang, You SongThe magnetic properties of single-molecule
magnets can be controlled by external conditions such as light, pressure,
and temperature. Among these conditions, photochemical control is
the best approach due to the accessibility and rapid conduction of
light. In this work, an Er(III)-based complex with photoactive ligand
bpe, [Er(nat)3·MeOH·bpe] (1, bpe
= 1,2-bis(2-pyridyl)ethylene, nat = 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione),
was synthesized. The auxiliary ligand nat and cyclized ligand bpe
stacked reasonably in the crystal structure. Two molecules of 1 experienced the [2, 2]-cycloaddition reaction under the
UV irradiation in the solid state and [{Er(nat)3MeOH}2(tpcb)] (2, tpcb = tetrakis(4-pyridyl)cyclobutane)
was produced. The slight change in the structure around Er(III) ions
leads to the different magnetic properties, which illustrates the
photochemical control of the magnetic properties of single-molecule
magnets.