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 journalArticlepeer-review


    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
    Issue number16-17
    StatePublished - Nov 17 2005


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

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Inorganic Chemistry
    • Materials Chemistry

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