Thermal decomposition kinetics of tetraalkylammonium and dimethylpyridinium salts of the complex anion bis(1,3-dithiole-2-thione-4,5-dithiolate) bismuthate (−1)

In the present work, thermal decomposition kinetics of tetraalkylammonium and 1,4-dimethylpyridinium salts of the complex anion bis(1,3-dithiole-2-thione-4,5-dithiolate) bismuthate ([Bi(dmit)2]−) are addressed. Kinetic parameters for the decomposition reactions were obtained utilizing the Ozawa and Coats–Redfern (CR) models. Entropy, enthalpy, and free energy of decomposition processes were calculated from the CR results, providing information on the thermodynamic characteristics of the processes. The most probable mechanisms of thermal decomposition were indicated for the studied systems, along with their kinetic and thermodynamic parameters.