Synthesis of chromium(III) bis(benzamidinate) ...

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Title Synthesis of chromium(III) bis(benzamidinate) complexes via single electron oxidation
Author(s) Beth A. Dykerman, Joshua J. Smith, Erin M. McCarvill, Amanda J. Gallant, Natasha D. Doiron, Brian D. Wagner, Hillary A. Jenkins, Brian O. Patrick, Kevin M. Smith
Journal One-electron Organometallic Reactivity, Journal of Organometallic Chemistry
Date 2007
Volume 692
Issue 15
Start page 3183
End page 3190
Abstract Single-electron oxidation of the known Cr(II) bis(amidinate) Cr[(Me3SiN)2CPh]2 (1) provides synthetic access to neutral Cr(III) complexes. The complexes Cr[(Me3SiN)2CPh]2X were prepared by reaction of 1 with AgO2CPh (X = O2CPh, 2), of 1 with iodine in THF (X = I/THF, 3), or of 1 with iodine in pentane, followed by addition of 2-adamantanone (X = I/2-adamantanone, 4). Treatment of 2 or 3 with C3H5MgCl resulted in the thermally stable allyl complex (X = ?3-C3H5, 5). A preliminary kinetics study of the reaction of 1 with excess allyl benzoate and allyl acetate was performed. The molecular structures of 2, 3 and 5 were confirmed by single crystal X-ray diffraction.

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