Bis(?5-Cyclopentadienyl)Bis(Diethylamido)Uranium(IV) and Tris(?5-Cyclopentadienyl) (Diethylamido)Uranium(IV)

Organouranium amides are useful precursors for the synthesis of a large variety of organouranium derivatives since they are known to undergo very easy cleavage of the uranium nitrogen bond by acidic hydrogen or to give insertion of molecules with polar multiple bonds.' The compounds UCp,(NEt,), and UCp,NEt2 (Cp = qs-CsH,, Et = C,H,) are the most Bis(q5-cyclopentadienyl)bis(diethylamido)uranium(lV) 235 convenient organouranium amides for these purposes.