Unexpected cis-dioxido uranyl carboxylate compound: Synthesis, characterization and photocatalytic activity of uranyl-succinate complexes

• Two new complexes formed by uranyl ions with ligands have been investigated.
• The two complexes were characterized by X-ray crystal diffraction.
• The result shows that the two complexes possess potential photocatalytic activity.

Two new complexes formed by uranyl ions with succinic acid and 4,4′-dipyridine have been investigated. Interestingly, the uranium(VI) coordination polymers possess two types dioxido unit, a cis-dioxido bond angle with 115.421(2)°and a trans-dioxido bond angle with 178.421(2)°, respectively. The complexes were characterized by elemental analysis, IR and UV–vis spectroscopy and X-ray crystal diffraction. In addition, the properties of luminescence and photocatalytic analysis were also investigated. The result revealed that the two complexes show different photocatalytic activity in the decomposition of RhB under visible light and UV light irradiation.

The details process of reactions, the coordination environment and the UV–vis absorption spectra of the RhB solution during the decomposition reaction for complex 1.Figure optionsDownload as PowerPoint slide