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Issue 9, 2015
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Single-molecule magnetism in {Co III2Dy III2}-amine-polyalcohol-acetylacetonate complexes: effects of ligand replacement at the DyIII sites on the dynamics of magnetic relaxation

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Abstract

The synthesis of three new tetranuclear heterometallic CoIII–DyIII planar butterfly coordination complexes is reported of molecular formulae [DyIII2CoIII2(OH)2(teaH)2(acac)6]·MeCN (3), [DyIII2CoIII2(OH)2(bdea)2(acac)6]·2H2O (4) and [DyIII2CoIII2(OH)2(edea)2(acac)6]·2H2O·4MeCN (5) (teaH3 = triethanolamine, bdeaH2 = N-n-butyldiethanolamine, edeaH2 = N-ethyldiethanolamine and acacH = acetylacetone) each of which display single-molecule magnet (SMM) behaviour. Importantly these new compounds are related to several {CoIII2DyIII2} SMM compounds allowing for the study of the effect that the subtle changes in structure have on the SMM properties. Ab initio calculations are performed on 3–5, as well as on the related structural derivatives in order to gain insight on the effect the structural changes have on the dynamic magnetic behaviour.

Graphical abstract: Single-molecule magnetism in {CoIII2DyIII2}-amine-polyalcohol-acetylacetonate complexes: effects of ligand replacement at the DyIII sites on the dynamics of magnetic relaxation

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Supplementary files

Article information


Submitted
17 May 2015
Accepted
15 Jul 2015
First published
16 Jul 2015

Inorg. Chem. Front., 2015,2, 867-875
Article type
Research Article
Author version available

Single-molecule magnetism in {CoIII2DyIII2}-amine-polyalcohol-acetylacetonate complexes: effects of ligand replacement at the DyIII sites on the dynamics of magnetic relaxation

S. K. Langley, N. F. Chilton, B. Moubaraki and K. S. Murray, Inorg. Chem. Front., 2015, 2, 867
DOI: 10.1039/C5QI00076A

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