Insights into the Electronic Structure of a U(IV) Amido and U(V) Imido Complex
Luisa Köhler, Michael Patzschke, Stephen Bauters, Tonya Vitova, Sergei M. Butorin, Kristina O. Kvashnina, Moritz Schmidt, Thorsten Stumpf, Juliane März
Abstract
Abstract Reaction of the N ‐heterocylic carbene ligand i PrIm (L 1 ) and lithium bis(trimethylsilyl)amide (TMSA) as a base with UCl 4 resulted in U(IV) and U(V) complexes. Uranium's +V oxidation state in (HL 1 ) 2 [U(V)(TMSI)Cl 5 ] (TMSI=trimethylsilylimido) ( 2 ) was confirmed by HERFD‐XANES measurements. Solid state characterization by SC‐XRD and geometry optimisation of [U(IV)(L 1 ) 2 (TMSA)Cl 3 ] ( 1 ) indicated a silylamido ligand mediated inverse trans influence (ITI). The ITI was examined regarding different metal oxidation states and was compared to transition metal analogues by theoretical calculations.