Silyl-Phosphino-Carbene Complexes of Uranium(IV).

ABSTRACT: Unprecedented silyl-phosphino-carbene complexes of uranium(IV) are presented, where before all covalent actinide-carbon double bonds were stabilised by phosphorus(V) substituents or restricted to matrix isolation experiments. Conversion of [U(BIPM^TMS )(Cl)(μ-Cl)₂ Li(THF)₂ ] (1, BIPM^TMS =C(PPh₂ NSiMe₃ )₂ ) into [U(BIPM^TMS )(Cl){CH(Ph)(SiMe₃ )}] (2), and addition of [Li{CH(SiMe₃ )(PPh₂ )}(THF)]/Me₂ NCH₂ CH₂ NMe₂ (TMEDA) gave [U{C(SiMe₃ )(PPh₂ )}(BIPM^TMS )(μ-Cl)Li(TMEDA)(μ-TMEDA)_0.5 ]₂ (3) by α-hydrogen abstraction. Addition of 2,2,2-cryptand or two equivalents of 4-N,N-dimeth

SUBMITTER: Lu E 

PROVIDER: S-EPMC6001699 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature