The decomposition kinetics of [Et4N]2[M(dmit)2] (M = Ni, Pd) in a nitrogen atmosphere using thermogravimetry |
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Authors: | Antonio Gerson Bernardo da Cruz |
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Institution: | Grupo de Materiais Condutores e Energia, Instituto de Química, Universidade Federal do Rio de Janeiro Cidade Universitária, Centro de Tecnologia, Bloco A, 21945-970 Rio de Janeiro, RJ, Brasil |
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Abstract: | Thermal properties and thermal decompositions of NEt4]2M(dmit)2] (M = Ni(II), Pd(II), dmit = 1,3-dithiole-2-thione-4,5-dithiolate) have been studied by thermogravimetry (TG). The TG analysis has shown that the complexes are thermally stable up to 460 K and the decomposition of the complexes occurs in three consecutive stages up to 873 K. A thermal stability scale for M(dmit)2]n− anions was based on the thermal properties. Kinetics parameters, such as activation energy, Ea, and kinetic apparent pre-exponential factor, ln Aapp, have been calculated from the thermogravimetric data at heating rates of 10, 15, 20 and 25 K/min involving differential (Friedman's equation) and integral (Flynn-Wall-Ozawa's equation) methods. |
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Keywords: | Thermal kinetics bis(1 3-Dithiole-2-thione-4 5-dithiolato) Dmit Nickel(II) and palladium(II) complexes Activation energy Thermal decomposition |
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