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

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Abstract

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.

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Acknowledgements

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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Authors and Affiliations

  1. Instituto de Química, UNESP, CP 355, Araraquara, SP, 14801-970, Brazil

    F. J. Caires, L. S. Lima, Oswaldo Treu-Filho & M. Ionashiro

  2. Universidade Federal da Grande Dourados, UFGD, Rodovia-Itahum, km 12, Dourados, MS, 79804-970, Brazil

    C. T. Carvalho

  3. Instituto de Ciências Exatas e da Terra, Campus Pontal do Araguaia, UFMT, MT-100, Rodovia, MT, 78698-000, Brazil

    A. B. Siqueira

Authors
  1. F. J. Caires
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  2. L. S. Lima
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  3. C. T. Carvalho
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  4. A. B. Siqueira
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  5. Oswaldo Treu-Filho
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  6. M. Ionashiro
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Correspondence to F. J. Caires.

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Caires, F.J., Lima, L.S., Carvalho, C.T. et al. Thermal and spectroscopic data to investigate the oxamic acid, sodium oxamate and its compounds with some bivalent transition metal ions. J Therm Anal Calorim 107, 335–344 (2012). https://doi.org/10.1007/s10973-011-1835-8

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  • DOI: https://doi.org/10.1007/s10973-011-1835-8

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