Authors:
C. Ribeiro Instituto de Química de Araraquara-UNESP R. Prof. Francisco Degni, s/no C.P. 355 CEP 14801-970 Araraquara Brazil R. Prof. Francisco Degni, s/no C.P. 355 CEP 14801-970 Araraquara Brazil

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M. Crespi Instituto de Química de Araraquara-UNESP R. Prof. Francisco Degni, s/no C.P. 355 CEP 14801-970 Araraquara Brazil R. Prof. Francisco Degni, s/no C.P. 355 CEP 14801-970 Araraquara Brazil

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C. Guerreiro Instituto de Química de Araraquara-UNESP R. Prof. Francisco Degni, s/no C.P. 355 CEP 14801-970 Araraquara Brazil R. Prof. Francisco Degni, s/no C.P. 355 CEP 14801-970 Araraquara Brazil

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L. Guinesi Instituto de Química de Araraquara-UNESP R. Prof. Francisco Degni, s/no C.P. 355 CEP 14801-970 Araraquara Brazil R. Prof. Francisco Degni, s/no C.P. 355 CEP 14801-970 Araraquara Brazil

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Abstract  

In this present work, barium ion was reacted with different ligands which are 5,7-dibromo 5,7-dichloro, 7-iodo and 5-chloro-7-iodo-8-hydroxyquinoline, in acetone/ammonium hydroxide medium under constant stirring and the obtained compounds were as follows: (I) Ba[(C9 H4 ONBr2 )2 ]⋅1.5H2 O; (II) Ba[(C9 H4 ONCl2 )(OH)]⋅1H2 O; (III) Ba[(C9 H5 ONI)2 ]⋅1H2 O and (IV) Ba[(C9 H4 ONICl)2 ]⋅5H2 O, respectively. The compounds were characterized by elemental analysis, infrared absorption spectrum (IR), inductively coupled plasma spectrometry (ICP), simultaneous thermogravimetry-differential thermal analysis (TG-DTA) and differential scanning calorimeter (DSC). The final residue of the thermal decomposition was characterized as orthorhombic BaBr2from (I); the intermediate residue, as a mixture of orthorhombic BaCO3 and BaCl2 and cubic BaO and the final residue, as a mixture of cubic and tetragonal BaO and orthorhombic BaCl2 (II); the intermediate residue, as orthorhombic BaCO3 and as a final residue, a mixture of cubic and tetragonal BaO from (III); and the intermediate residue, as a mixture of orthorhombic BaCO3 and BaCl2 and as a final residue, a mixture of cubic and tetragonal BaO and orthorhombic BaCl2 from (IV).

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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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