Unusual Ion UO4− Formed Upon Collision Induced Dissociation of [UO2(NO3)3]−, [UO2(ClO4)3]−, [UO2(CH3COO)3]− Ions

The following ions [UO2(NO3)3]−, [UO2(ClO4)3]−, [UO2(CH3COO)3]− were generated from respective salts (UO2(NO3)2, UO2(ClO4)3, UO2(CH3COO)2) by laser desorption/ionization (LDI). Collision induced dissociation of the ions has led, among others, to the formation of UO4− ion (m/z 302). The undertaken quantum mechanical calculations showed this ion is most likely to possess square planar geometry as suggested by MP2 results or strongly deformed geometry in between tetrahedral and square planar as indicated by DFT results. Interestingly, geometrical parameters and analysis of electron density suggest it is an UVI compound, in which oxygen atoms bear unpaired electron and negative charge.

Graphical AbstractCID of the ions [UO2(NO3)3]−, [UO2(ClO4)3]−, [UO2(CH3COO)3]− (generated by laser desorption/ionization from respective uranyl salts) has led, among others, to the formation of UO4− ion.Figure optionsDownload full-size imageDownload high-quality image (40 K)Download as PowerPoint slide