Factors influencing the thermal decomposition of transition metal complexes with 2-OH-aryloximes under nitrogen |
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Authors: | M Lalia-Kantouri |
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Institution: | (1) Aristotle University of Thessaloniki, Department of Chemistry, Laboratory of Inorganic Chemistry, P.O. Box 135, Thessaloniki 54124, Greece |
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Abstract: | Summary The thermal behavior of copper(II), nickel(II) and palladium(II) complexes with two anionic varieties of 2-OH-aryloximes (ox),
M(ox)2] (2-hydroxypropiophenonoxime and 2-hydroxy-4-methoxy-benzophenonoxime) was studied by using simultaneous TG/DTG-DTA technique
under nitrogen in the temperature range 40-700°C. The behavior was compared with that in static air, which had been previously
studied. It was found that the metal, the substituents on the ligand and the heating rate influenced their thermal decomposition.
The thermal stability of the complexes with the same ligand depended on the metallic cation, following the order Pd(II)>Ni(II)>Cu(II).
It also depended on the type of ligand, increasing with bulky substituents on the oximic carbon and the benzene ring. The
sample mass almost did not affect their decomposition mode. The residues at 700°C of all complexes consisted of a carbonaceous
oxide, determined by energy dispersive spectrometry (EDS) and IR spectroscopy |
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Keywords: | copper complexes transition metal complexes nickel complexes 2-OH-aryloximes palladium complexes thermal properties TG/DTG-DTA |
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