Application de la spectrométrie infrarouge et Raman à l'étude des complexes en solution aqueuse: Fe3+–H2C2O4

Abstract

A study by Raman spectrometry of the System Fe3+–H2C2O4 in aqueous solution shows very clearly the successive formation of the three complexes: Fe(C2O4)+, Fe(C2O4)2−, Fe(C2O4)33−. Each species is characterised by a specific Raman spectrum.The evolution of Raman band intensities with the range of exciting line, and the comparison between ir and Raman spectra of Fe(III) and Al(III) complexes, show for Fe(III) species a pre-resonance Raman effect.