Synthesis and crystal structure of the homoleptic uranium (IV) thiolates [(thf)3Na(µ-SR)3U(µ-SR)3NA(thf)3](thf = tetrahydrofuran; R = But or Ph)

Abstract

The uranium(IV) hexathiolate complexes [(thf)₃Na(µ-SR)₃U(µ-SR)₃Na(thf)₃](thf = tetrahydrofuran; R = Buⁿ, Prⁱ, Bu^t or Ph) were prepared by treatment of UCl₄ or U(BH₄)₄ with the corresponding NaSR reagent. The crystal structures of the tert-butyl and phenyl derivatives have been determined. Reaction of U(SBuⁿ)₄ with NaSBuⁿ gave the anion [U(SBuⁿ)₆]^2– which, by protonation with NEt₃HBPh₄, was transformed back into U(SBuⁿ)₄.