Synthesis of New Dioxouranium(VI) Complexes with Tridentate Diabasic Schiff Bases Derived from Salicylaldehyde or Substituted Salicylaldehyde and Ethanolamine

Abstract

The sylithesis of several new dioxouranium(VI) complexes of Schiff bases prepared from selicylaldehyde, 5-chlorosalicylaldehyde, 5-bromosalicylaldehyde, 5-nitrosalicylaldehyde, 3,5-dichlorosalicylaldehyde, 4-methoxy-salicylaldehyde, 5-methoxysalicylaldehyae, 3-ethoxy-salicylaldehyae, 2-hydroxy-1-naphthaldehyde and ethanolamine is described. The Schiff bases behave as ONO donor tridentate, dibasic ligands. The complexes are of the type UO₂L.CH₃OH, where LH₂ = tridentate, dibasic Schiff base. The complexes are characterised by elemental analysis, infrared and electronic spectra, conductance, magnetic susceptibility and molecular weight measurements. The complexes are monomeric, diamagnetic and octahedral. The ν (C=N), ν (C-O)phenolic, and ν(C-0) alcoholic stretch frequencies have been determined to probe the coordination sites of the ligands.