Thermal decomposition study of antimony (III) tribromide and aromatic amine adducts

• Published in: Journal of thermal analysis and calorimetry 2009-08, Vol.97 (2), p.427-431
• Main Authors: Martins, E. P. S., Botelho, J. R., Oliveira, S. F., Arakaki, L. N. H., Fonseca, M. G., Espínola, J. G. P.
• Format: Article
• Language: English
• Subjects: Adducts; Analytical Chemistry; Antimony; Calorimetry; Chemistry; Chemistry and Materials Science; Exact sciences and technology; Infrared radiation; Inorganic Chemistry; Inorganic chemistry and origins of life; Integrals; Kinetics and mechanism of reactions; Mathematical models; Measurement Science and Instrumentation; Physical Chemistry; Polymer Sciences; Pyridines; Spectroscopy
• ISSN: 1388-6150; 1588-2926; 1572-8943
• DOI: 10.1007/s10973-009-0087-3

Solid adducts, SbBr 3  · L (L = pyridine, 2-, 3- and 4-methylpyridine; abbreviated as Py, 2MPy, 3MPy and 4MPy) were synthesized and characterized by elemental analysis and IR spectroscopy. According to the results coordination of nitrogen of aromatic ring with antimony atom was supposed. Kinetic studies were accomplished by using thermogravimetric data obtained through non-isothermal technique. Determination of activation energy and pre-exponential factor was based on the Coats–Redfern integral Ozawa–Flynn–Wall model-free methods. The kinetics parameters E a , and log A determined at 5 K min −1 were 150.6 kJ mol −1 , 16.0 and 122.0 kJ mol −1 , 12.4 for SbBr 3  · Py and SbBr 3  · 4MPy, respectively.