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

Authors :
Sanping Chen
Vincent Montigaud
Hongshan Ke
Wenyuan Wang
Olivier Cador
Min Li
Haipeng Wu
Gang Xie
Zhengqiang Xia
Boris Le Guennic
Northwest University (Xi'an)
Institut des Sciences Chimiques de Rennes (ISCR)
Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1)
Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes)
Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)
21803042, National Natural Science Foundation of China
725184, European Research Council
Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes)
Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Source :
Chemical Communications, Chemical Communications, Royal Society of Chemistry, 2019, 55 (97), pp.14661-14664. ⟨10.1039/c9cc07552f⟩, Chemical Communications, 2019, 55 (97), pp.14661-14664. ⟨10.1039/c9cc07552f⟩
Publication Year :
2019
Publisher :
HAL CCSD, 2019.

Abstract

International audience; 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.

Details

Language :
English
ISSN :
13597345 and 1364548X
Database :
OpenAIRE
Journal :
Chemical Communications, Chemical Communications, Royal Society of Chemistry, 2019, 55 (97), pp.14661-14664. ⟨10.1039/c9cc07552f⟩, Chemical Communications, 2019, 55 (97), pp.14661-14664. ⟨10.1039/c9cc07552f⟩
Accession number :
edsair.doi.dedup.....e72e8631a3e36d597e74f30b398ecbb6