The TG curves of 8-hydroxyquinoline Copper(WSDTY) in a N2 atmosphere, show a two step mass loss. The first step occurs up to 141.6°C and it is ascribed to the loss of H2O; the second, up to 192°C, to the loss of 1.5H2O followed by the elimination of the uncoordinated ligand, respectively. It can be observed through three endothermic peaks at 92, 132 and 181°C, in DTA curve. The last mass-loss step, between 320°C and 512°C, is due to the partial volatilization followed by partial thermal decomposition of the anhydrous complex which could not be completed even at 900°C. In this step, two endothermic peaks in DTA curve in a N2 atmosphere can be verified. The first intense peak at 370°C, is attributed to the fusion and the second broad peak at 455°C, to partial volatilization of the anhydrous compound.
The DSC curves in a N2 atmosphere, show five endothermic peaks. The first two at 129.5 and 172.3°C are ascribed to dehydration process and another at 177.2°C, to the elimination of the uncoordinated ligand. The fourth peak at 375.3°C is ascribed to the fusion of the anhydrous complex and the last well defined one at 439°C, to partial volatilization. The TG curve in a synthetic air atmosphere, shows four mass-loss steps. The first two steps show similar behavior of the compound in a N2 atmosphere. The third mass-loss step, between 320 and 462°C, is ascribed to the partial thermal decomposition of the anhydrous compound with formation of ZnO. The remaining compound, characterized on the basis of infrared spectra, presents still IR bands of the anhydrous complex, which is decomposed, between 462 to 620°C, with formation of the ZnO.
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The DSC curves in a N2 atmosphere, show five endothermic peaks. The first two at 129.5 and 172.3°C are ascribed to dehydration process and another at 177.2°C, to the elimination of the uncoordinated ligand. The fourth peak at 375.3°C is ascribed to the fusion of the anhydrous complex and the last well defined one at 439°C, to partial volatilization. The TG curve in a synthetic air atmosphere, shows four mass-loss steps. The first two steps show similar behavior of the compound in a N2 atmosphere. The third mass-loss step, between 320 and 462°C, is ascribed to the partial thermal decomposition of the anhydrous compound with formation of ZnO. The remaining compound, characterized on the basis of infrared spectra, presents still IR bands of the anhydrous complex, which is decomposed, between 462 to 620°C, with formation of the ZnO.
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