Synthesis and properties of high-valent organouranium complexes containing terminal organoimido and oxo functional groups. A new class of organo-f-element complexes

Article abstract of DOI:10.1021/ja00142a011

In this paper, we report in detail the synthesis and properties of a family of bis(pentamethylcyclopentadienyl) uranium(IV) arylimido complexes produced from both metathesis and protonation routes and discuss their two electron oxidation reactions with organic azides, amine N-oxides, and nitrous oxide. As part of this study, the solid state structures of the anionic arylimido species [Li(TMED)][(η⁵-C₅ Me₅)_2U- (NC₆H₅)Cl] (1) and the neutral terminal arylimi complex (η⁵-C₅Me₅)₂U(N-2,4,6-t-Bu₃ C₆H₂) (8) have been determined. The latter compoun represents the first f² analog of the known d² gro 6 organoimido complexes of the general formula (C₅H₄R)₂M(=N^tBu)(M = Mo or W).