Authors:
Ronaldo S. Nunes Faculdade de Engenharia de Guaratinguetá, UNESP, CEP 12516-410, Guaratinguetá, SP, Brazil

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Gilbert Bannach Departamento de Química, Falculdade de Ciências, UNESP, CEP 17033-260, Bauru, SP, Brazil

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José M. Luiz Faculdade de Engenharia de Guaratinguetá, UNESP, CEP 12516-410, Guaratinguetá, SP, Brazil

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Flávio J. Caires Instituto de Química de Araraquara, UNESP, CEP 14800-900, Araraquara, SP, Brazil

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Claudio T. Carvalho Universidade Federal da Grande Dourados, CEP 79.804-970, Dourados, MS, Brazil

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Massao Ionashiro Instituto de Química de Araraquara, UNESP, CEP 14800-900, Araraquara, SP, Brazil

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Abstract

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.

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  • 2. Dametto, PR, Ambrozini, B, Siqueira, AB, Carvalho, CT, Ionashiro, M 2010 Synthesis, characterization and thermal behaviour of solid-state 3-methoxybenzoates of heavy trivalent lanthanides and yttrium (III). J Therm Anal Calorim 101:933939 .

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  • 3. Siqueira, AB, Carvalho, CT, Rodrigues, EC, Ionashiro, EY, Bannach, G, Ionashiro, M 2010 Synthesis, characterization and thermal behaviour of heavy lanthanide and yttrium pyruvates in the solid state. J Therm Anal Calorim 100:95100 .

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  • 4. Bannach, G, Mendes, RA, Ionashiro, EY, Mauro, AE, Schnitzler, E, Ionashiro, M 2005 Thermal studies on solid 2-chlorobenzylidenepyruvate of lighter trivalent lanthanides. J Therm Anal Calorim 79:329334 .

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  • 5. Ionashiro, EY, Bannach, G, Siqueira, AB, Carvalho, CT, Rodrigues, EC, Ionashiro, M 2008 2-Methoxybenzylidenepyruvate with heavier trivalent lanthanides and yttrium (III) synthesis and characterization. J Therm Anal Calorim 92:953959 .

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  • 6. Carvalho, CT, Siqueira, AB, Treu-Filho, O, Ionashiro, EY, Ionashiro, M 2009 Synthesis, characterization and thermal behaviour of solid 2-methoxycinnamylidenepyruvate of light trivalent lanthanides. J Braz Chem Soc 20:13131319 .

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  • 7. Bannach, G, Schnitzler, E, Treu-Filho, O, Utuni, VHS, Ionashiro, M 2006 Synthesis, characterization and thermal studies on solid compounds of 2-chlorobenzylidenepyruvate of heavier trivalent lanthanides and yttrium (III). J Therm Anal Calorim 83:233240 .

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  • 8. Kobelnik, M, Schnitzler, E, Ionashiro, M 2008 Solid-state compounds of 2-methoxybenzylidenepyruvate with some bivalent metal ions—synthesis, characterization and thermal behavior studies. J Therm Anal Calorim 91:891895 .

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  • 9. Baba, AI, Wang, W, Kim, WY, Strong, L, Schmehl, RH 1994 Convenlent synthesis of bis-bipyridines and bis-terpyridines bridged by phenyl and biphenyl tethers. Synth Commun 24:10291036 .

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)