Synthesis and Thermal Study of Magnesium Complexes with 8-hydroxyquinolinate Derivatives |
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Authors: | Guerreiro C T R Ribeiro C A Crespi M S Torres C |
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Institution: | (1) Instituto de Química de Araraquara-UNESP, R. Prof. Francisco Degni, s/no, C. P. 355, CEP: 14801-970 Araraquara, Brazil |
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Abstract: | Magnesium ion was reacted with 5,7-dibromo-, 5,7-dichloro-, 7-iodo-and 5-chloro-7-iodo-8-hydroxyquinoline, in acetone/ammonium
hydroxide medium under constant stirring to obtain (I) Mg(C9H4ONBr2)2]·2H2O; (II) Mg(C9H4ONCl2)2]·3H2O; (III) Mg(C9H5ONI)2]·2H2O and (IV)Mg(C9H4ONICl)2]·2.5H2O complexes. The compounds were characterized by elemental analysis, IR spectra, ICP, TG-DTA and DSC.
Through thermal decomposition residues were obtained and characterized, by X-ray diffractometry, as a mixture of hexagonal
MgBr2 and cubic MgO to the (I) compound at 850°C; cubic MgO to the (II), (III) and (IV) compounds at750, 800 and 700°C, respectively.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | 8-hydroxyquinolinate derivatives magnesium thermal decomposition |
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