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
在 40-700°C 的温度范围内,在氮气环境下使用 TG/DTG-DTA 同步技术研究了
铜(II)、
镍(II)和
钯(II)络合物与两种阴离子型 2-OH-aryloximes (ox)、[M(ox)2](2-
羟基丙酮肟和 2-羟基-4-
甲氧基苯酮
肟)的热行为。将其行为与之前研究的静态空气中的行为进行了比较。研究发现,
金属、
配体上的取代基和加热速率都会影响它们的热分解。具有相同
配体的配合物的热稳定性取决于
金属阳离子,顺序为 Pd(II)>Ni(II)>Cu(II) 。它还取决于
配体的类型,随着氧化碳和苯环上大取代基的增加而增加。样品质量几乎不影响它们的分解模式。通过能量色散光谱法(EDS)和红外光谱法测定,所有配合物在 700°C 时的残留物都是碳质氧化物。