om9004127_si_001.cif (39.75 kB)

C−H and Si−N Bond Oxygenations of a Divalent Ytterbium Amide of the Pyrrolyl-Cyclopentadienyl Ligand

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posted on 27.07.2009, 00:00 by Jingjun Hao, Haibin Song, Chunming Cui
Reaction of Me4C5H-SiMe2-NC4H4 with Yb[N(SiMe3)2]2(THF)2 yielded a new type of ansa-sandwich divalent lanthanide amide (Me4C5-SiMe2-NC4H4)YbN(SiMe3)2 (2), in which the Yb atom is η5-coordinated to both the C5 and C4N rings. 2 rapidly reacted with dioxygen to give a dinuclear trivalent ytterbium species via intramolecular C−H and Si−N bond oxygenation reactions.