Synthesis and characterization of uranyl complexes and their peroxo derivatives with some thioschiff bases

Abstract

The Schiff bases derived from salicylaldehydes and <i>o</i>-amino thiophenol (1, 1') react with uranyl salts to yield two series of uranyl-thioschiff base complexes of the type (3-6) and (3'-6'). These Schiff bases act as tridentate ONS donor ligands. Similar reaction of <i>o-</i> aminothiophenol with diketones yield benzthiazolines (2, 2') and rearranged to thioschiff bases of N₂S₂ donor systems in uranyl complexes (7, 7'). The peroxo derivatives of the formulae (8, 8')and (9, 9') have also been isolated. The complexes have been characterised by elemental analyses, IR and thermal studies. The peroxo contents have been determined by redox titration and are found to be thermally stable.