Sj. Coles et al., THE FIRST AUTHENTICATED URANIUM(V)-PHOSPHINE COMPLEX, UCL2[N(CH2CH2PPRI2)(2)](3), Journal of the Chemical Society, Chemical Communications, (17), 1994, pp. 1967-1968
The reaction of UCl4 with the diphosphinoamido ligand, ((Pr2PCH2CH2)-P
-iN-, in the presence of oxygen gives rise to the first well character
ised uranium(v)-tertiary phosphine complex.