Synthesis and characterization of cerium citric and tartaric complexes

Cerium citric and tartaric complexes have been synthesized in ethylene glycol solutions under conditions similar to those used at polymerized complex method (PCM) application. The composition, IR, 13C and 1H NMR spectral characteristics, morphology and thermal decomposition of the isolated complexes have been studied. The influences of the anionic component (NO3− or Cl−) of the salt used as Ce-source and of the nature of the ligand (citric or tartaric) have been traced, especially on the Ce oxidation state in the complexes formed.