Fast tunneling Jahn-Teller isomer of the [Mn12O 12(O2CC6H4-2-CH3) 16(H2O)4]· S single-molecule magnet

Evan M. Rumberger, Enrique Del Barco, Jon Lawrence, Stephen Hill, Andrew D. Kent, Lev N. Zakharov, Arnold L. Rheingold, David N. Hendrickson

    Research output: Contribution to journalArticle

    Abstract

    The single-crystal X-ray structure of the single-molecule magnet [Mn 12O12(O2CC6H4-2-CH 3)16(H2O)4]·CH 2Cl2·2H2O (complex 1) is reported. Complex 1 is a new example of a "Jahn-Teller isomer", since it has two Mn(III) ions with abnormally oriented Jahn-Teller elongation axes. Complex 1 has a lower activation energy (Ueff = 29 K) for magnetization reversal relative to other reported [Mn12O12] type molecules (e.g., Ueff = 70 K for Mn12Ac). Single-crystal low temperature magnetization measurements are reported that confirm that complex 1 is a single-molecule magnet. High-field electron paramagnetic resonance measurements were performed on a single crystal to give the spin Hamiltonian parameters.

    Original languageEnglish (US)
    Pages (from-to)2557-2561
    Number of pages5
    JournalPolyhedron
    Volume24
    Issue number16-17
    DOIs
    StatePublished - Nov 17 2005

    Fingerprint

    Magnets
    Isomers
    magnets
    isomers
    Single crystals
    Molecules
    single crystals
    Electron Spin Resonance Spectroscopy
    methylidyne
    Magnetization reversal
    molecules
    Hamiltonians
    magnetization
    X-Rays
    Ions
    elongation
    Temperature
    Paramagnetic resonance
    Elongation
    Magnetization

    Keywords

    • Nanomagnet
    • Quantum tunneling of magnetization
    • Single-molecule magnet
    • Superparamagnet

    ASJC Scopus subject areas

    • Biochemistry
    • Inorganic Chemistry
    • Physical and Theoretical Chemistry
    • Materials Chemistry

    Cite this

    Rumberger, E. M., Barco, E. D., Lawrence, J., Hill, S., Kent, A. D., Zakharov, L. N., ... Hendrickson, D. N. (2005). Fast tunneling Jahn-Teller isomer of the [Mn12O 12(O2CC6H4-2-CH3) 16(H2O)4]· S single-molecule magnet. Polyhedron, 24(16-17), 2557-2561. https://doi.org/10.1016/j.poly.2005.03.126

    Fast tunneling Jahn-Teller isomer of the [Mn12O 12(O2CC6H4-2-CH3) 16(H2O)4]· S single-molecule magnet. / Rumberger, Evan M.; Barco, Enrique Del; Lawrence, Jon; Hill, Stephen; Kent, Andrew D.; Zakharov, Lev N.; Rheingold, Arnold L.; Hendrickson, David N.

    In: Polyhedron, Vol. 24, No. 16-17, 17.11.2005, p. 2557-2561.

    Research output: Contribution to journalArticle

    Rumberger, EM, Barco, ED, Lawrence, J, Hill, S, Kent, AD, Zakharov, LN, Rheingold, AL & Hendrickson, DN 2005, 'Fast tunneling Jahn-Teller isomer of the [Mn12O 12(O2CC6H4-2-CH3) 16(H2O)4]· S single-molecule magnet', Polyhedron, vol. 24, no. 16-17, pp. 2557-2561. https://doi.org/10.1016/j.poly.2005.03.126
    Rumberger EM, Barco ED, Lawrence J, Hill S, Kent AD, Zakharov LN et al. Fast tunneling Jahn-Teller isomer of the [Mn12O 12(O2CC6H4-2-CH3) 16(H2O)4]· S single-molecule magnet. Polyhedron. 2005 Nov 17;24(16-17):2557-2561. https://doi.org/10.1016/j.poly.2005.03.126
    Rumberger, Evan M. ; Barco, Enrique Del ; Lawrence, Jon ; Hill, Stephen ; Kent, Andrew D. ; Zakharov, Lev N. ; Rheingold, Arnold L. ; Hendrickson, David N. / Fast tunneling Jahn-Teller isomer of the [Mn12O 12(O2CC6H4-2-CH3) 16(H2O)4]· S single-molecule magnet. In: Polyhedron. 2005 ; Vol. 24, No. 16-17. pp. 2557-2561.
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    abstract = "The single-crystal X-ray structure of the single-molecule magnet [Mn 12O12(O2CC6H4-2-CH 3)16(H2O)4]·CH 2Cl2·2H2O (complex 1) is reported. Complex 1 is a new example of a {"}Jahn-Teller isomer{"}, since it has two Mn(III) ions with abnormally oriented Jahn-Teller elongation axes. Complex 1 has a lower activation energy (Ueff = 29 K) for magnetization reversal relative to other reported [Mn12O12] type molecules (e.g., Ueff = 70 K for Mn12Ac). Single-crystal low temperature magnetization measurements are reported that confirm that complex 1 is a single-molecule magnet. High-field electron paramagnetic resonance measurements were performed on a single crystal to give the spin Hamiltonian parameters.",
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    AU - Barco, Enrique Del

    AU - Lawrence, Jon

    AU - Hill, Stephen

    AU - Kent, Andrew D.

    AU - Zakharov, Lev N.

    AU - Rheingold, Arnold L.

    AU - Hendrickson, David N.

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