Thermal analysisThermal decomposition of bis(5,7-dichloro-8-quinolinol)- oxovanadium(IV) complexes with pyridines

Add time:08/12/2019    Source:sciencedirect.com

We describe a kinetic study by differential scanning calorimetry (DSC) of the thermal decomposition under a nitrogen atmosphere of several adducts with pyridine or substituted pyridines of bis(5,7-dichloro-8-quinolinol)oxovanadium(IV), to which the formula assigned is VO(clox)2· B, where clox = 5,7-dichloro-8-quinolinol and B = pyridine (Py), 3-methylpyridine (3-MP), 4-methylpyridine (4-MP), 3,5-dimethylpyridine (3,5-DMP), 3-aminopyridine (3-AP) or 4-aminopyridine (4-AP).For the endothermic process of the loss of coordinated base, we calculated activation energies using a new method, and the mechanism of this reaction was also determined. A relationship between activation energies and the properties of the ligands was established.

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