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

Stuart Langley, Nicholas Frederick Chilton, Boujemaa Moubaraki, Keith Spencer Murray

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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
Original languageEnglish
Pages (from-to)867-875
Number of pages9
JournalInorganic Chemistry Frontiers: an international journal of inorganic chemistry
Issue number9
Publication statusPublished - 2015

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