Bromine-bridged Dy2 single-molecule magnet: magnetic anisotropy driven by cis/trans stereoisomers.

Min LiHaipeng WuZhengqiang XiaVincent MontigaudOlivier Cador Boris Le GuennicHongshan KeWenyuan WangGang XieSanping Chen

Published in: Chemical communications (Cambridge, England) (2019)

We report the first bromine-bridged dinuclear [Dy(Cy3PO)2(μ-Br)(Br)2]2·2C7H8 single-molecule magnet with an effective energy barrier of 684 K and magnetic hysteresis below 3 K. The asymmetric DyIII centres present two unique stereoisomeric octahedral coordination environments depending on the cis/trans disposition of the Cy3PO ligands, leading to the orthogonality of the easy magnetic axes that annihilates the dipolar interactions.

Keyphrases

single molecule
molecularly imprinted
atomic force microscopy
living cells
mass spectrometry