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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 |
Appears in Collections: | Staff Publications Elements |
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Long_JACS_2011.pdf | Published version | 650.58 kB | Adobe PDF | CLOSED | None | |
Long_JACS_2011.cif.txt | Supporting information | 134.4 kB | Text | CLOSED | None | |
Long_JACS_2011_SI.pdf | Supporting information | 1.35 MB | Adobe PDF | CLOSED | None |
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