Reversible Chalcogen-Atom Transfer to a Terminal Uranium Sulfide
journal contributionposted on 15.12.2014 by Danil E. Smiles, Guang Wu, Trevor W. Hayton
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The reaction of elemental S or Se with [K(18-crown-6)][U(S)(NR2)3] (1) results in the formation of the new uranium(IV) dichalcogenides [K(18-crown-6)][U(η2-S2)(NR2)3] (2) and [K(18-crown-6)][U(η2-SSe)(NR2)3] (5). The further addition of elemental S to 2 results in the formation of [K(18-crown-6)][U(η3-S3)(NR2)3] (3). Complexes 2, 3, and 5 can be reconverted into 1 via the addition of R3P (R = Et, Ph), concomitant with the formation of R3PE (E = S, Se).