Abstract
Two phenol-based mononuclear dioxouranium complexes [UO2(mdbp)2{OHCH2CMe3}] (1) and [UO2(bdbp)2{OCHNMe2}] (2) (where mdbpH=4-methyl-2,6-dibenzoylphenol and bdbpH=4-tert-butyl-2,6-dibenzoylphendol) have been synthesized and characterized by mass spectrometry, IR, NMR and electronic spectroscopy, cyclic voltammetry and single crystal X-ray diffraction studies. In both the complexes the UVI atom has pentagonal bipyramidal geometry with two apical oxo groups, two chelating dibenzoyl phenolate ligands and one unidentate neopentanol or DMF molecule in the equatorial plane. The electrochemical behaviour of the complexes was investigated by cyclic voltammetry in CH3CN and DMSO. Both complexes exhibited a single quasireversible/irreversible reduction corresponding to the UO22+/UO21+ couple. The potential for 1 in DMSO shifted towards a more positive value by 0.604V, indicating the exchange of coordinated neopentanol with DMSO. The fluorescence of 1 and 2 was studied by fluorometric method and was compared with that observed for the ligand precursors. The results indicated characteristic charge transfer emissions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
