Uranium halide complexes stabilized by a new sterically demanding tripodal tris(N-adamantylamidodimethylsilyl)methane ligand

Research output: Research - peer-reviewArticle

  • Authors:
  • David M. King
  • Benedict Gardner
  • William Lewis
  • Steve Liddle


The new tris(N-adamantylamine-dimethylsilyl)methane HC{SiMe2N(H)Ad}3 (TsAdH3, 1) and its trilithium salt [HC{SiMe2N(Li)Ad}3] (TsAdLi3, 2) were synthesized and characterized by multinuclear NMR and IR spectroscopy, elemental microanalysis, and single-crystal X-ray diffraction (XRD). The utility of 2 as a ligand transfer reagent for uranium was examined by targeting TsAd-uranium(IV) and (III) complexes via its reaction with UCl4 and UI3(THF)4; however, the crystalline material isolated, [U(TsAd)(Cl)(μ-Cl){Li(THF)3}] (4) and [U(TsAd)U(I)] (5), are products of lithium chloride inclusion and uranium disproportionation/ligand redistribution, respectively, and hints at the wide scope of reactivity accessible to TsAd-uranium complexes. Complex 5 was also independently synthesized stepwise in good yield from 2 via treatment with UCl4 and, subsequently, Me3SiI. The uranium complexes were characterized by a combination of NMR and IR spectroscopy, elemental microanalysis, magnetometric methods, and single-crystal XRD.

Bibliographical metadata

Original languageEnglish
Pages (from-to)1893-1903
JournalJournal of Coordination Chemistry
Early online date30 Apr 2016
StatePublished - 24 May 2016