Genuine Redox Isomerism in a Rare-Earth-Metal Complex

Authors

  • Prof. Dr. Igor L. Fedushkin,

    Corresponding author
    1. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603950 (Russia)
    • G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603950 (Russia)
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  • Dr. Olga V. Maslova,

    1. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603950 (Russia)
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  • Dr. Alexander G. Morozov,

    1. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina 49, Nizhny Novgorod 603950 (Russia)
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  • Dr. Sebastian Dechert,

    1. Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, Göttingen 37077 (Germany)
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  • Dr. Serhiy Demeshko,

    1. Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, Göttingen 37077 (Germany)
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  • Prof. Dr. Franc Meyer

    Corresponding author
    1. Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, Göttingen 37077 (Germany)
    • Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, Göttingen 37077 (Germany)
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  • This work was supported by the Russian Foundation for Basic Research (10-03-00430). We thank Prof. Dr. G. K. Fukin for determination of the molecular structure of 1A.

Abstract

original image

Redox isomerism is observed for a lanthanide complex for the first time. Upon lowering the temperature, an electron of [{(dpp-bian)Yb(μ-Cl)(dme)}2] (1) is transferred from the metal to the ligand (see picture), giving rise to marked shortening of Yb[BOND]N bonds and a hysteretic jump in the magnetic moment. The crystal packing is of a crucial importance, as two other crystal modifications of 1 do not undergo this effect.

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