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Diiron Amido−Imido Complex [(Cp*Fe)22-NHPh)(μ2-NPh)]:  Synthesis and a Net Hydrogen Atom Abstraction Reaction To Form a Bis(imido) Complex

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posted on 2006-06-26, 00:00 authored by Shin Takemoto, Shin-ichiro Ogura, Ho Yo, Yuko Hosokoshi, Ken Kamikawa, Hiroyuki Matsuzaka
A reaction between [Cp*FeCl]x and LiNHPh (1 equiv to Fe) produces a new paramagnetic Fe(II)−Fe(III) μ2-amido−μ2-imido complex [(Cp*Fe)22-NHPh)(μ2-NPh)] (1), which, upon interaction with 2,2‘-azobis(2,4-dimethylvaleronitrile), undergoes a net N−H hydrogen atom abstraction reaction to give a diamagnetic Fe(III)−Fe(III) μ2-imido dimer [Cp*Fe(μ2-NPh)]2 (2). The molecular structures of 1 and 2 have been determined by single-crystal X-ray diffraction.