Fluoride abstraction and reversible photochemical reduction of cationic uranyl(VI) phosphine oxide complexes

The syntheses, structural and spectroscopic characterization, fluoride abstraction reactions, and photochemical reactivity of cationic uranyl(VI) phosphine oxide complexes are described. The results illustrate an equal degree of lability associated with uranium(IV) oxidation as is found with uranyl(VI) reduction, presumably as both proceed through the same reactive uranyl(V) intermediate.