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Do Cp(CO)2Mn Fragments Stabilize Radicals?†
Dipl.-Chem. Renate Gross,
Priv.-Doz. Dr. Wolfgang Kaim,
Dipl.-Chem. Renate Gross
Institut für Anorganische Chemie der Universität, Niederurseler Hang, D-6000 Frankfurt am Main 50 (FRG)
Search for more papers by this authorCorresponding Author
Priv.-Doz. Dr. Wolfgang Kaim
Institut für Anorganische Chemie der Universität, Niederurseler Hang, D-6000 Frankfurt am Main 50 (FRG)
Institut für Anorganische Chemie der Universität, Niederurseler Hang, D-6000 Frankfurt am Main 50 (FRG)Search for more papers by this authorDipl.-Chem. Renate Gross,
Priv.-Doz. Dr. Wolfgang Kaim,
Dipl.-Chem. Renate Gross
Institut für Anorganische Chemie der Universität, Niederurseler Hang, D-6000 Frankfurt am Main 50 (FRG)
Search for more papers by this authorCorresponding Author
Priv.-Doz. Dr. Wolfgang Kaim
Institut für Anorganische Chemie der Universität, Niederurseler Hang, D-6000 Frankfurt am Main 50 (FRG)
Institut für Anorganische Chemie der Universität, Niederurseler Hang, D-6000 Frankfurt am Main 50 (FRG)Search for more papers by this author†
This work was supported by the Deutsche Forschungsgemeinschaft, the Fonds, der Chemischen Industrie, the Hermann-Willkomm-Stiftung, the BASF AG, the Messer Griesheim GmbH, and the Karl-Winnacker- Stiftung of Hoechst AG.
Abstract
Two classes of paramagnetic manganese complexes can be differentiated by ESR spectroscopy: radical complexes 1, in which radical-anion ligands L⊙⊖ are stabilized by Cp(CO)2Mn1 fragments, and low-spin Mn11 compounds 2, with strongly nucleophilic ligands L.
References
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For stabilization of organometal fragments in high oxidation states, see
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- 18 A binuclear Mn11/Mn1 compound with thiolate ligands was recently characterized at −40 °c; J. W. McDonald, Inorg. Chem. 24 (1985) 1734; the first Mn11/Mn1 complexes that are stable at room temperature can be detected in the oxidative reaction of [Cp1(CO)2 (thf)Mn] with alkoxides; R. Gross, W. Kaim, unpublished results.
