Please use this identifier to cite or link to this item: https://doi.org/10.1021/ja109706y
Title: Single-Molecule Magnet Behavior for an Antiferromagnetically Superexchange-Coupled Dinuclear Dysprosium(III) Complex
Authors: Long, Jerome
Habib, Fatemah
Lin, Po-Heng
Korobkov, Ilia
Enright, Gary
Ungur, Liviu 
Wernsdorfer, Wolfgang
Chibotaru, Liviu F
Murugesu, Muralee
Keywords: Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
CRYSTAL-STRUCTURE
SOFT ACIDS
LANTHANIDE
RELAXATION
EXCHANGE
TRIANGLES
CHIRALITY
CLUSTERS
LIGANDS
BASES
Issue Date: 13-Apr-2011
Publisher: AMER CHEMICAL SOC
Citation: Long, Jerome, Habib, Fatemah, Lin, Po-Heng, Korobkov, Ilia, Enright, Gary, Ungur, Liviu, Wernsdorfer, Wolfgang, Chibotaru, Liviu F, Murugesu, Muralee (2011-04-13). Single-Molecule Magnet Behavior for an Antiferromagnetically Superexchange-Coupled Dinuclear Dysprosium(III) Complex. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 133 (14) : 5319-5328. ScholarBank@NUS Repository. https://doi.org/10.1021/ja109706y
Abstract: A family of five dinuclear lanthanide complexes has been synthesized with general formula [LnIII2(valdien)2(NO 3)2] where (H2valdien = N1,N3-bis(3- methoxysalicylidene)diethylenetriamine) and LnIII = Eu III1, GdIII2, TbIII3, DyIII4, and HoIII5. The magnetic investigations reveal that 4 exhibits single-molecule magnet (SMM) behavior with an anisotropic barrier U eff = 76 K. The step-like features in the hysteresis loops observed for 4 reveal an antiferromagnetic exchange coupling between the two dysprosium ions. Ab initio calculations confirm the weak antiferromagnetic interaction with an exchange constant JDy-Dy = -0.21 cm-1. The observed steps in the hysteresis loops correspond to a weakly coupled system similar to exchange-biased SMMs. The Dy2 complex is an ideal candidate for the elucidation of slow relaxation of the magnetization mechanism seen in lanthanide systems.(Figure Presented) © 2011 American Chemical Society.
Source Title: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
URI: https://scholarbank.nus.edu.sg/handle/10635/228761
ISSN: 00027863
15205126
DOI: 10.1021/ja109706y
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