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Insights into the Electronic Structure of a U(IV) Amido and U(V) Imido Complex.

ABSTRACT: Reaction of the N-heterocylic carbene ligand ⁱ PrIm (L¹ ) and lithium bis(trimethylsilyl)amide (TMSA) as a base with UCl₄ resulted in U(IV) and U(V) complexes. Uranium's +V oxidation state in (HL¹ )₂ [U(V)(TMSI)Cl₅ ] (TMSI=trimethylsilylimido) (2) was confirmed by HERFD-XANES measurements. Solid state characterization by SC-XRD and geometry optimisation of [U(IV)(L¹ )₂ (TMSA)Cl₃ ] (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.

SUBMITTER: Kohler L

PROVIDER: S-EPMC9310906 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature

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Insights into the Electronic Structure of a U(IV) Amido and U(V) Imido Complex.

Köhler Luisa L Patzschke Michael M Bauters Stephen S Vitova Tonya T Butorin Sergei M SM Kvashnina Kristina O KO Schmidt Moritz M Stumpf Thorsten T März Juliane J

Chemistry (Weinheim an der Bergstrasse, Germany) 20220314 21

Reaction of the N-heterocylic carbene ligand i PrIm (L1 ) and lithium bis(trimethylsilyl)amide (TMSA) as a base with UCl4 resulted in U(IV) and U(V) complexes. Uranium's +V oxidation state in (HL1 )2 [U(V)(TMSI)Cl5 ] (TMSI=trimethylsilylimido) (2) was confirmed by HERFD-XANES measurements. Solid state characterization by SC-XRD and geometry optimisation of [U(IV)(L1 )2 (TMSA)Cl3 ] (1) indicated a s ...[more]

PMID: 35179271

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