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

DOIFull Paper Access

36

Citations

24

References

2019

Year

Min Li, Haipeng Wu, Zhengqiang Xia, Vincent Montigaud, Olivier Cador, Boris Le Guennic, Hongshan Ke, Wenyuan Wang, Gang Xie, Sanping Chen
Chemical Communications

Abstract

We report the first bromine-bridged dinuclear [Dy(Cy<sub>3</sub>PO)<sub>2</sub>(μ-Br)(Br)<sub>2</sub>]<sub>2</sub>·2C<sub>7</sub>H<sub>8</sub> single-molecule magnet with an effective energy barrier of 684 K and magnetic hysteresis below 3 K. The asymmetric Dy<sup>III</sup> centres present two unique stereoisomeric octahedral coordination environments depending on the cis/trans disposition of the Cy<sub>3</sub>PO ligands, leading to the orthogonality of the easy magnetic axes that annihilates the dipolar interactions.

References

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