Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 59: Issue 3
Synthesis, Characterization and Thermal Decomposition of the Pyridine Adducts of Co, Ni, Cu and Zn Sulfate
Authors:
V. Jordanovska 'Sv. Kiril i Metodij' University Institute of Chemistry, Faculty of Science P.O. Box 162 91001 Skopje, Macedonia P.O. Box 162 91001 Skopje, Macedonia

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P. Naumov 'Sv. Kiril i Metodij' University Institute of Chemistry, Faculty of Science P.O. Box 162 91001 Skopje, Macedonia P.O. Box 162 91001 Skopje, Macedonia

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B. Boyanov Plovdiv University Faculty of Chemistry Paisii Hilendarski 4025 Plovdiv Bulgaria Paisii Hilendarski 4025 Plovdiv Bulgaria

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R. Trojko Rudjer Boskovic Institute P.O. Box 1016 41001 Zagreb Croatia P.O. Box 1016 41001 Zagreb Croatia

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Pages:
859–868
Online Publication Date:
02 Nov 2004
Publication Date:
01 Mar 2000
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010170224420
Restricted access

Abstract  

Pyridine adducts of Co, Ni, Cu and Zn sulfate were obtained by refluxing the corresponding sulfate with pyridine in chloroform. The compounds were characterized by elemental analysis, X-ray powder diffraction and FTIR spectroscopy. The thermal decompositions (TG/DTG/DTA) of the complexes in the interval 20–1000C were also studied. The elemental and thermal analysis results revealed that the formulae of the complexes are M2(SO4)2xC5H5NyH2O, where x=2, 3, 2 and 1 and y=6, 4, 6 and 4 for the Co, Ni, Cu and Zn compound, respectively. The complexes were not found to be isostructural, but certain structural similarities were observed between the Zn and Co compounds. Although the thermal decomposition pathways of the various compounds were quite different and each consisted of several steps, in all cases the dehydration preceded the depyridination. Metal oxide was always obtained as final product. The spectral data are discussed with regard to the thermal behaviour. Appreciably stronghydrogen-bonding and pronounced structural differences relating to the sulfate ions were presumed for the Cu compound.

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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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