Complexes of Dioxouranium(VI) with Zwitter-Ionic Forms of Bi- and Tetra-dentate Schiff Bases

Article abstract of DOI:10.1007/BF00904679

Potentially bi- and tetra-dentate Schiff bases derived from salicylaldehyde react with hydrated uranyl salts to give complexes: UO2H2LX2, UO2H2L'X2 and UO2(HL)2X2 .Because of marked spectral similarities with the structurally known Ca(H2L)(NO3)2, the Schiff bases are coordinated through the negatively charged phenolic oxygen atoms and not the nitrogen atoms of the azomethine groups which carry the protons transferred from phenolic groups on coordination.Halide, nitrate, perchlorate and thiocyanate groups are covalently bonded to the uranyl ion, resulting a 6-coordinated uranium ion in the halo and thiocyanato complexes and 8-coordinated in nitrato and perchlorato complexes. - Keywords: Complexes; Dioxouranium; Infra red; Schiff base complexes; Zwitter ion