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

Abstract : We report the first bromine-bridged dinuclear [Dy(CyPO)(μ-Br)(Br)]·2CH single-molecule magnet with an effective energy barrier of 684 K and magnetic hysteresis below 3 K. The asymmetric Dy centres present two unique stereoisomeric octahedral coordination environments depending on the cis/trans disposition of the CyPO ligands, leading to the orthogonality of the easy magnetic axes that annihilates the dipolar interactions.
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Submitted on : Wednesday, December 11, 2019 - 3:14:13 PM
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Min Li, Haipeng Wu, Zhengqiang Xia, Vincent Montigaud, Olivier Cador, et al.. Bromine-bridged Dy2 single-molecule magnet: magnetic anisotropy driven by cis/trans stereoisomers. Chemical Communications, Royal Society of Chemistry, 2019, 55 (97), pp.14661-14664. ⟨10.1039/c9cc07552f⟩. ⟨hal-02397306⟩

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