SPECTRAL AND THERMAL FEATURES OF SOME NOVEL IRON(III) CHELATES WITH SUBSTITUTED 2-HYDROXYARYLOXIMES - KINETICS ANALYSIS OF THERMOGRAVIMETRIC DATA

The reaction products of five substituted 2-hydroxyaryloximes with Fe( III) ion were obtained and characterized by means of elemental analysi s, conductometric measurements, magnetic moment determinations and spe ctroscopic data (IR and electronic absorption). The thermal stability and mode of decomposition were studied in air atmosphere by using TG-D TA. Kinetic analysis of the TG data was performed with the Coats-Redfe rn method to determine the apparent activation energies and the pre-ex ponential factor of the Arrhenius equation. Mass spectrometry was also used, and possible fragmentation patterns are given and discussed.