Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 101: Issue 2
Thermal and spectroscopic properties of light lanthanides (III) and sodium complexes of 2,5-pyridinedicarboxylic acid
Authors:
Zofia Rzączyńska Department of General and Coordination Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Sq. M. Curie-Skłodowskiej 2, 20-031 Lublin, Poland

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Anna Danczowska-Burdon Department of General and Coordination Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Sq. M. Curie-Skłodowskiej 2, 20-031 Lublin, Poland

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Justyna Sienkiewicz-Gromiuk Department of General and Coordination Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, Sq. M. Curie-Skłodowskiej 2, 20-031 Lublin, Poland

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Pages:
671–677
Online Publication Date:
08 Jul 2010
Publication Date:
01 Aug 2010
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-010-0941-3
Keywords:
Lanthanide complexes; Pyridinedicarboxylates; 2,5-Pyridinedicarboxylates; Thermal decomposition
Open access

Abstract  

Pyridine-2,5-dicarboxylic acid, known as isocinchomeric acid is one of six isomers containing two carboxylic groups. Light lanthanide (III) complexes with pyridine-2,5-dicarboxylic acid with general formula Ln2L3·nH2O, where n = 8, 9, were obtained. Their thermal and spectroscopic properties were studied. Sodium salt was obtained as Na2L·H2O. Hydrated complexes of La(III), Ce(III), Pr(III), Nd(III), Sm(III), Eu(III) and Gd(III) are stable to 313–333 K, whereas Na2L·H2O is stable to about 333 K. Dehydration process for all compounds runs in one stage, next they decompose into appropriate lanthanide oxalates, oxocarbonates carbonates and finally to metal oxides. Bands of νCOOH vibrations at 1736 and 1728 cm−1 disappear on complex spectra and νas and νs of COO− groups appear thus indicating that complexation process took place.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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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)

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