Synthesis, Spectral and Thermal Studies on Dioxouranium(VI) Complexes of Isatin-3-oxime

Abstract

A new series of dioxouranium(VI) complexes derived from indole-2,3-dione (isatin) with hydroxylamine hydrochloride (isatin-3-oxime) were synthesized and characterized by spectral studies, thermal analysis, molar conductance and elemental analysis. A group of six mixed ligand complexes were prepared with various anions such as acetate, lactate, nitrate, perchlorate, sulphate and thiocyanate as secondary ligands and isatin-3-oxime as primary ligand. Isatin-3-oxime acts as a bidentate chelating ligand and coordinates to UO²⁺₂ the metal ion through azomethine nitrogen and carbonyl oxygen atoms of isatin moeity. The complexes were screened for their antimicrobial activities and thermal stabilities.