New reactions of uranium amide complexes leading to pentavalent and cationic derivatives

Protonolysis of U–N bonds in a series of uranium amide complexes by means of NEt3HBPh4 gives the corresponding cationic compounds, whereas oxidation of anionic UIV amide complexes by TlBPh4 affords the related pentavalent derivatives; thus the UV compounds [U(NEt2)5], [U(cot)(NEt2)3] and [U(cot)(NEt2)2(thf)][BPh4] have been prepared (cot =η-C8H8, thf = tetrahydrofuran).