Journal of Thermal Analysis and Calorimetry

, Volume 107, Issue 1, pp 335–344 | Cite as

Thermal and spectroscopic data to investigate the oxamic acid, sodium oxamate and its compounds with some bivalent transition metal ions

  • F. J. Caires
  • L. S. Lima
  • C. T. Carvalho
  • A. B. Siqueira
  • Oswaldo Treu-Filho
  • M. Ionashiro


Synthesis, characterization, and thermal behavior of transition metal oxamates, M(NH2C2O3)2·nH2O (M = Mn(II), Fe(II), Co(II), Ni(II), Cu(II), Zn(II)), as well as the thermal behavior of oxamic acid and its sodium salt (NaNH2C2O3) were investigated employing simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC), experimental and theoretical infrared spectroscopy, TG-DSC coupled to FTIR, elemental analysis and complexometry. The results led to information about the composition, dehydration, thermal stability, thermal decomposition, as well as of the gaseous products evolved during the thermal decomposition of these compounds in dynamic air and N2 atmospheres.


Bivalent transition metal Oxamate Thermal behavior Theoretical calculations 



The authors acknowledge to the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) and the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) for financial support. This research was supported by resources supplied by the Center for Scientific Computing (NCC/GridUNESP) of the Sao Paulo State University (UNESP), Instituto de Química de Araraquara, UNESP–Campus de Araraquara and CENAPAD-UNICAMP.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  • F. J. Caires
    • 1
  • L. S. Lima
    • 1
  • C. T. Carvalho
    • 2
  • A. B. Siqueira
    • 3
  • Oswaldo Treu-Filho
    • 1
  • M. Ionashiro
    • 1
  1. 1.Instituto de Química, UNESPAraraquaraBrazil
  2. 2.Universidade Federal da Grande Dourados, UFGDDouradosBrazil
  3. 3.Instituto de Ciências Exatas e da TerraCampus Pontal do Araguaia, UFMTRodoviaBrazil

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