Expanding the Library of Uranyl Amide Derivatives: New Complexes Featuring the <i>tert</i>-Butyldimethylsilylamide Ligand

New uranyl derivatives featuring the amide ligand, −N­(SiHMe₂)^<i>t</i>Bu, were synthesized and characterized by X-ray crystallography, multinuclear NMR spectroscopy, and absorption spectroscopies. Steric properties of these complexes were also quantified using the computational program Solid-G. The increased basicity of the free ligand −N­(SiHMe₂)^<i>t</i>Bu was demonstrated by direct comparison to −N­(SiMe₃)₂, a popular supporting ligand for uranyl. Substitutional lability on a uranyl center was also demonstrated by exchange with the −N­(SiMe₃)₂ ligand. The increased basicity of this ligand and diverse characterization handles discussed here will make these compounds useful synthons for future reactivity