Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 64: Issue 3
Thermal Behaviour of Tin(II) Complex With 8-hydroxyquinolinate in the Solid State
Authors:
C. Ribeiro Unesp Instituto de Química Araraquara, São Paulo C.P. 355 CEP 14801-970 Brazil Araraquara, São Paulo C.P. 355 CEP 14801-970 Brazil

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M. Crespi Unesp Instituto de Química Araraquara, São Paulo C.P. 355 CEP 14801-970 Brazil Araraquara, São Paulo C.P. 355 CEP 14801-970 Brazil

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L. Guinesi Unesp Instituto de Química Araraquara, São Paulo C.P. 355 CEP 14801-970 Brazil Araraquara, São Paulo C.P. 355 CEP 14801-970 Brazil

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C. Guerreiro Unesp Instituto de Química Araraquara, São Paulo C.P. 355 CEP 14801-970 Brazil Araraquara, São Paulo C.P. 355 CEP 14801-970 Brazil

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H. Zorel Unesp Instituto de Química Araraquara, São Paulo C.P. 355 CEP 14801-970 Brazil Araraquara, São Paulo C.P. 355 CEP 14801-970 Brazil

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Pages:
1209–1215
Online Publication Date:
02 Nov 2004
Publication Date:
01 Jun 2001
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1011557431951
Keywords:
8-hydroxyquinoline; oxidation; thermal behaviour; tin(II) complexes; volatilisation; kw6
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Abstract  

Tin(II) complexes with 8-hydroxyquinolinate in solid state have been obtained by adding aqueous ammonium to a solution containing stannous chloride and 8-hydroxiquinoline in medium of HCl and acetone up to pH 5 and 9, respectively. The products obtained show the same composition, Sn(C9H6ON)2; however there are some differences regarding both the thermal behaviour in an oxidant atmosphere and morphology. These products were characterised by elemental and complexometric analysis, TG and DTA curves, infrared and X-ray diffractometry. TG curves show, above 448 K, the partial oxidation on air atmosphere of Sn(II) complexes to Sn(IV) complexes, SnO(C9H6ON)2. This behaviour does not depend only on pH in which the compounds were obtained but also on the heating rate in TG curves. Sn(II) complexes volatilise almost completely on nitrogen atmosphere and partially on air atmosphere depending on the oxidation degree of the 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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