Synthesis and characterization of lanthanide{III) complexes of 1-naphthoxy-, 2-naphthoxy- and 8-quinolinyloxyacetic acids

Abstract

Lanthanum(III), praseodymium(III), neodymium(Ill), samarium(III), gadolinium(III), terbium(III) and dysprosium(III) chelates of the type [M(RCOO)₃].2H₂O with the ligands 1-naphthoxy-, 2-naphthoxy- and 8-quinolinyloxyacetic acids have been isolated and characterized on the basis of elemental analyses, spectral, magnetic and thermal data. The IR data show that the bonding of the carboxylato group to the metal ion is bidentate. A coordination number of six is suggested for the rare earth metal ions in these complexes.