Anisotropy barrier enhancement via ligand substitution in tetranuclear {CoIII2LnIII2} single molecule magnets

Stuart K. Langley; Nicholas F. Chilton; Boujemaa Moubaraki; Keith S. Murray

doi:10.1039/C3CC44037K

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Anisotropy barrier enhancement vialigand substitution in tetranuclear {Co^III₂Ln^III₂} single molecule magnets†

Stuart K. Langley,^a Nicholas F. Chilton,^b Boujemaa Moubaraki^a and Keith S. Murray*^a

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* Corresponding authors

^a School of Chemistry, Monash University, Clayton, Australia
E-mail: keith.murray@monash.edu
Tel: +61 399054512

^b School of Chemistry, University of Manchester, Oxford Road, UK

Abstract

The replacement of coordinated acetylacetonate for nitrate around a Dy^III ion results in the enhancement of the single molecule magnet properties of a {Co^III₂Dy^III₂} complex, resulting in a large thermal energy barrier and reduced quantum tunnelling at low temperatures. The analogous Tb^III complex displays field induced SMM behaviour.

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Article information

DOI: https://doi.org/10.1039/C3CC44037K
Article type: Communication
Submitted: 29 May 2013
Accepted: 23 Jun 2013
First published: 24 Jun 2013

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Chem. Commun., 2013,49, 6965-6967

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Anisotropy barrier enhancement via ligand substitution in tetranuclear {Co^III₂Ln^III₂} single molecule magnets

S. K. Langley, N. F. Chilton, B. Moubaraki and K. S. Murray, Chem. Commun., 2013, 49, 6965 DOI: 10.1039/C3CC44037K

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Chemical Communications