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Synthesis and Thermal Study of 8-Hydroxyquinoline Derivatives of the Alkaline Earth Metals I. Strontium Complexes

Authors
  • Guerreiro, C. T. R.1
  • Ribeiro, C. A.1
  • Crespi, M. S.1
  • Torres, C.1
  • 1 Instituto de Química de Araraquara-UNESP, R. Prof. Francisco Degni, s/n, Araraquara, CEP. 14801-970, Brazil , Araraquara
Type
Published Article
Journal
Journal of Thermal Analysis and Calorimetry
Publisher
Springer-Verlag
Publication Date
Sep 01, 1999
Volume
56
Issue
2
Pages
519–524
Identifiers
DOI: 10.1023/A:1010100610627
Source
Springer Nature
Keywords
License
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Abstract

Strontium complexes of 5,7-dibromo-, 5,7-dichloro-, 7-iodo- and 5-chloro-7-iodo-8-hydroxyquinoline were precipitated from an aqueous ammonia and acetone medium. The complexes obtained were Sr[(C9H4ONBr2)2]·2.5H2O; Sr[(C9H4ONCl2)(OH)]·1.5H2O; Sr[(C9H5ONI)2]·5H2O and Sr[(C9H4ONICl)(OH)]·1.25H2O. The residues of their thermal decomposition were SrBr2; a mixture of SrCl2, SrCO3 and SrO; SrCO3 and SrCO3, respectively. All were characterized by means of thermogravimetry, differential thermal analysis, complexometry with EDTA, atomic absorption spectroscopy, IR spectroscopy and X-ray diffraction.

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