Thermal Decomposition of Solid Methylcobalt(III) Complexes with Quadridentate Schiff Base Ligands

Abstract

Thermal decomposition of solid aquamethylcobalt (III) complexes with quadridentate Schiff base ligands as N, N'-ethylenebis(salicylideneamine) and its analogues was investigated by TG, DSC, and pyrolysis gas-chromatographic (PGC) analyses. The coordinated water was eliminated in the temperature range of 68∼116°C, and then, the methyl group was dissociated in the range of 138∼218°C accompanied by partial conversion into methane and ethane. The PGC analysis indicated that the molar ratio of methane and ethane evolved varied depending on the nature of the Schiff base. The results were discussed in comparison with those reported for the solution reaction.