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A High Anisotropy Barrier in a Sulfur-Bridged Organodysprosium Single-Molecule Magnet

Authors

  • Dr. Floriana Tuna,

    1. School of Chemistry and EPSRC UK National EPR Facility, The University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
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  • Charlene A. Smith,

    1. School of Chemistry and EPSRC UK National EPR Facility, The University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
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  • Dr. Michael Bodensteiner,

    1. Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg (Germany)
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  • Dr. Liviu Ungur,

    1. Division of Quantum and Physical Chemistry, Katholieke Universiteit Leuven, Celestijenlaan 200F, 3001 Leuven (Belgium)
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  • Prof. Liviu F. Chibotaru,

    1. Division of Quantum and Physical Chemistry, Katholieke Universiteit Leuven, Celestijenlaan 200F, 3001 Leuven (Belgium)
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  • Prof. Eric J. L. McInnes,

    1. School of Chemistry and EPSRC UK National EPR Facility, The University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
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  • Prof. Richard E. P. Winpenny,

    1. School of Chemistry and EPSRC UK National EPR Facility, The University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
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  • Prof. David Collison,

    Corresponding author
    1. School of Chemistry and EPSRC UK National EPR Facility, The University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
    • School of Chemistry and EPSRC UK National EPR Facility, The University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
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  • Dr. Richard A. Layfield

    Corresponding author
    1. School of Chemistry and EPSRC UK National EPR Facility, The University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
    • School of Chemistry and EPSRC UK National EPR Facility, The University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
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  • R.A.L. thanks the Alexander von Humboldt Foundation (Fellowship for Experienced Researchers). The EPSRC (UK) are acknowledged. R.E.P.W. thanks The Royal Society for a Wolfson Merit Award. L.U. thanks the FWO-Vlaanderen (Flemish Science Foundation) for a post-doctoral fellowship.

Abstract

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The sulfur-bridged dimers [{Cp′2Ln(μ-SSiPh3)}2] (Ln=Gd (1), Dy (2); Cp′=η5-C5H4Me) were synthesized by the transmetalation reactions between [Cp′3Ln] and Ph3SiSLi. Compound 2 is a single-molecule magnet with slow relaxation of magnetization up to 40 K and an anisotropy barrier of Ueff=133 cm−1. Insight into the SMM properties of 2 and closely related SMMs has been obtained using ab initio calculations.

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