Reaction products between sodium diphenyl-amine-4-sulfonate and hydrated LaCl3 -: Thermogravimetric and spectroscopic study

This paper presents the reactions of synthesis between the ligand sodium diphenylamine-4-sulfonate and the lanthanum(III) chloride hydrated. The compounds (LaCl3)2.(C12H10NSO3Na)(3).2(CH3CH2OH) (A) and (LaCl3).(C12H10NSO3Na).(CH3CH2OH).12H(2)O (B) were obtained using the solvents ethanol and methanol (synthesis A) and ethanol and water (synthesis B). The produced compounds and the ligand were characterized by thermogravimetric and differential thermogravimetric analysis, IR spectroscopy and elemental analysis of sodium, carbon, hydrogen, nitrogen, sulfur, chlorine and lanthanum, whereas the residues from thermal decomposition were investigated by X-ray diffractometry.