Easy access to stable pentavalent uranyl complexes.

Oxo group protonation and silylation of pentavalent uranyl Pacman complexes.

Uranyle Complexes: synthesis, evaluation of biological activity

In this research, some of the inorganic complexes of uranyl with N- donor ligandswere synthesized. Complexes were characteriezed by FT-IR and UV spectra, ¹HNMR,¹³CNMR and some physical properties. The uranyl unit (UO2) is composed of a center ofuranium atom with the charge (+6) and two oxygen atom by forming two U=O double bonds.The structure is linear (O=U=O, 180) and usually stable. So other ...

Pentavalent uranyl stabilized by a dianionic bulky tetradentate ligand.

A pentavalent uranyl complex supported by a bulky dianionic tetradentate (ONNO)-type salan ligand has been prepared by direct synthesis from the iodide precursor {[UO(2)Py(5)][KI(2)Py(2)]}(n), and displays high stability towards disproportionation and ligand dissociation but reactivity towards oxidizing substrates.

New insights into the acid mediated disproportionation of pentavalent uranyl.

The reaction of benzoic acid with the uranyl(V) complex [(UO(2)Py(5))(KI(2)Py(2))] in pyridine leads to immediate disproportionation with formation of a hexanuclear U(IV) benzoate cluster, a bis-benzoate complex of uranyl(VI) and water.

Unprecedented detection of inherent chirality in uranyl-salophen complexes.

In complexes with the uranyl dication salophen ligands are highly puckered. This implies that non-symmetrically substituted uranyl-salophen derivatives exist in principle as a pair of enantiomers. However, due to easy disrotations about the bonds connecting the phenoxide units to the imine carbons, the rate of interconversion between enantiomeric forms of simple, sterically unhindered compounds...