In an attempt to contribute to a better characterization of FeII and FeIII oxalate complexes, an investigation of their vibrational (infrared and Raman) and 57Fe-Mössbauer spectra was performed. It is shown that the two polymorphs, α and β, of FeC2O4.2H2O cannot be accurately differentiated with any of these spectroscopic methods, demonstrating the high structural similarity of these two crystalline forms. Partially deuterated samples of β-FeC2O4·2H2O were also investigated to improve the vibrational-spectroscopic analysis. In the case of Fe2(C2O4)3·4H2O, a structural model, derived from results of combined vibrational and Mössbauer data, could be proposed. The 298 K Mössbauer spectrum for this complex is discussed in detail for the first time. ©2009 Sociedade Brasileira de Química.
CITATION STYLE
D’Antonio, M. C., Wladimirsky, A., Palacios, D., Coggiola, L., González-Baró, A. C., Baran, E. J., & Mercader, R. C. (2009). Spectroscopic investigations of iron(II) and iron(III) oxalates. Journal of the Brazilian Chemical Society, 20(3), 445–450. https://doi.org/10.1590/S0103-50532009000300006
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