Dioxouraniun(VI) Complexes of Schiff Bases Obtained from Substituted Salicylaldehydes and Alkyl Amines

Abstract
Dioxouranium(VI) complexes have been examined with Schiff bases obtained from substituted salicylaldehydes and alkyl amines. Many new complexes of the type abbreviated as UO2−(NO3)2(X-SAL·R·H)2 have been prepared as orange-red crystals. The notation X denotes H, 5,6-benzo and 3-CH3O, and R represents alkyl groups. Infrared spectra indicate that there is no uncoordinated nitrate ion, and that the nitrate ions are coordinated with the uranium(VI) ion as unidentate ligands in these complexes. It is to be noted that the molecules, and not anions, of the Schiff bases are coordinated with the metal ions, as in many other dioxouranium(VI) complexes.