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Vol. 25 No. 8 (2013): Vol 25 Issue 8

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meso-Tetraphenylporphyriniron(III) Chloride Catalyzed Oxidation of Aniline and Its Substituents by Sodium Perborate: Degradation Kinetics

https://doi.org/10.14233/ajchem.2013.13996
M. Raja
Department of Chemistry, Sona College of Technology, Salem- 636 005, India
K. Karunakaran
Department of Chemistry, Sona College of Technology, Salem- 636 005, India

Corresponding Author(s) : M. Raja

raja72slm@yahoo.co.in

Asian Journal of Chemistry, Vol. 25 No. 8 (2013): Vol 25 Issue 8

Abstract

Heme-enzymes such as cytochromes P450 have ability to perform extremely difficult oxidations with high selectivity. The kinetic study of oxidation of aniline by sodium perborate with respect to the meso-tetraphenylporphyriniron(III) chloride reveals that there is a slow degradation of the catalyst in this oxidation reaction. The thermodynamic parameters for the oxidation have been determined and discussed. The increase in concentration of H+ ions retards the rate of the reaction revealed that the protonated aniline is less reactive in this oxidation reaction. The sodium perborate oxidation with 12 meta- and para-substituted anilines complies with isokinetic relationship and Exner relationship but not to any of the linear free energy relationships. The solvent interaction plays a major role in governing the reactivity. A suitable mechanism and rate law was proposed for this reaction.

Keywords

Aniline Oxidation Sodium perborate Meso-tetraphenylporphyriniron(III) chloride
Raja, M., & Karunakaran, K. (2013). meso-Tetraphenylporphyriniron(III) Chloride Catalyzed Oxidation of Aniline and Its Substituents by Sodium Perborate: Degradation Kinetics. Asian Journal of Chemistry, 25(8), 4404–4408. https://doi.org/10.14233/ajchem.2013.13996
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