Photoluminescence of a Uranium(IV) Alkoxide Complex.

ABSTRACT: In this report, we describe the photoluminescence of a homoleptic uranium(IV) alkoxide complex. Excitation of [Li(THF)]₂[U^IV(O ^t Bu)₆] leads to the first example of photoluminescence from a well-defined actinide complex originating from an f-f excitation, supported by second order multiconfigurational electronic structure calculations including spin-orbit coupling. These calculations show strong spin-orbit coupling between the excited triplet and singlet states for the 5f-orbital manifold, which leads to a long-lived excited state lifetime of 0.85 s at low temperature. The photophysical properties of homoleptic uranium(V) and uranium(VI) tertbutoxide complexes are also presented; we find that oxidation of the uranium(IV) alkoxide results i

SUBMITTER: Valerio LR 

PROVIDER: S-EPMC11775688 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature