Journal of Thermal Analysis and Calorimetry

, Volume 106, Issue 2, pp 525–529 | Cite as

Thermal studies on solid 1,4-bis(3-carboxy-3-oxo-prop-1-enyl) benzene of lighter trivalent lanthanides

  • Ronaldo S. Nunes
  • Gilbert Bannach
  • José M. Luiz
  • Flávio J. Caires
  • Claudio T. Carvalho
  • Massao Ionashiro


Solid-state compounds of general formula Ln2L3·nH2O, where L represents 1,4-bis(3-carboxy-3-oxo-prop-1-enyl)benzene and Ln = La, Ce, Pr, Nd, Sm, were synthesized. Complexometric titrations with EDTA, thermogravimetry (TG), differential thermal analysis (DTA), differential scanning calorimetry (DSC), X-ray powder diffractometry, elemental analysis and infrared spectroscopy have been employed to characterize and to study the thermal behavior of these compounds in dynamic air atmosphere. The results led to information about the composition, dehydration, crystallinity, and thermal decomposition of the synthesized compounds.


1,4-bis(3-carboxy-3-oxo-prop-1-enyl)benzene Lighter lanthanides Thermal behavior 



The authors thank FAPESP (Proc. 2006/06951-3), CAPES, and CNPq (Proc. 472233/2008-4 and 150759/2009) for financial support.


  1. 1.
    Pereira NCS, Melios CB, Marques RN, Siqueira OS, Moraes M, Molina M, Ionashiro M. 4-dimethylaminocinnamylidenepyruvic acid: synthesis, characterization and complexation with trivalent lanthanides, yttrium (III), scandium (III), thorium (IV) and uranium (VI) in aqueous solution. J Alloys Compd. 1997;249:94–8 (and references there in).CrossRefGoogle Scholar
  2. 2.
    Dametto PR, Ambrozini B, Siqueira AB, Carvalho CT, Ionashiro M. Synthesis, characterization and thermal behaviour of solid-state 3-methoxybenzoates of heavy trivalent lanthanides and yttrium (III). J Therm Anal Calorim. 2010;101:933–9.CrossRefGoogle Scholar
  3. 3.
    Siqueira AB, Carvalho CT, Rodrigues EC, Ionashiro EY, Bannach G, Ionashiro M. Synthesis, characterization and thermal behaviour of heavy lanthanide and yttrium pyruvates in the solid state. J Therm Anal Calorim. 2010;100:95–100.CrossRefGoogle Scholar
  4. 4.
    Bannach G, Mendes RA, Ionashiro EY, Mauro AE, Schnitzler E, Ionashiro M. Thermal studies on solid 2-chlorobenzylidenepyruvate of lighter trivalent lanthanides. J Therm Anal Calorim. 2005;79:329–34.CrossRefGoogle Scholar
  5. 5.
    Ionashiro EY, Bannach G, Siqueira AB, Carvalho CT, Rodrigues EC, Ionashiro M. 2-Methoxybenzylidenepyruvate with heavier trivalent lanthanides and yttrium (III) synthesis and characterization. J Therm Anal Calorim. 2008;92:953–9.CrossRefGoogle Scholar
  6. 6.
    Carvalho CT, Siqueira AB, Treu-Filho O, Ionashiro EY, Ionashiro M. Synthesis, characterization and thermal behaviour of solid 2-methoxycinnamylidenepyruvate of light trivalent lanthanides. J Braz Chem Soc. 2009;20:1313–9.CrossRefGoogle Scholar
  7. 7.
    Bannach G, Schnitzler E, Treu-Filho O, Utuni VHS, Ionashiro M. Synthesis, characterization and thermal studies on solid compounds of 2-chlorobenzylidenepyruvate of heavier trivalent lanthanides and yttrium (III). J Therm Anal Calorim. 2006;83:233–40.CrossRefGoogle Scholar
  8. 8.
    Kobelnik M, Schnitzler E, Ionashiro M. Solid-state compounds of 2-methoxybenzylidenepyruvate with some bivalent metal ions—synthesis, characterization and thermal behavior studies. J Therm Anal Calorim. 2008;91:891–5.CrossRefGoogle Scholar
  9. 9.
    Baba AI, Wang W, Kim WY, Strong L, Schmehl RH. Convenlent synthesis of bis-bipyridines and bis-terpyridines bridged by phenyl and biphenyl tethers. Synth Commun. 1994;24:1029–36.CrossRefGoogle Scholar
  10. 10.
    Ionashiro M, Graner CAF, Zuanon-Netto J. Titulação Complexométrica de Lantanídeos e Ítrio. Eclect Quim. 1983;8:29–32.Google Scholar
  11. 11.
    Deacon GB, Phillips RJ. Relationships between the carbon–oxygen stretching frequencies of carboxylato complexes and the type of carboxylate coordination. Coord Chem Rev. 1980;33:227–50.CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  • Ronaldo S. Nunes
    • 1
  • Gilbert Bannach
    • 2
  • José M. Luiz
    • 1
  • Flávio J. Caires
    • 3
  • Claudio T. Carvalho
    • 4
  • Massao Ionashiro
    • 3
  1. 1.Faculdade de Engenharia de Guaratinguetá, UNESPGuaratinguetáBrazil
  2. 2.Departamento de QuímicaFalculdade de Ciências, UNESPBauruBrazil
  3. 3.Instituto de Química de Araraquara, UNESPAraraquaraBrazil
  4. 4.Universidade Federal da Grande DouradosDouradosBrazil

Personalised recommendations