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Mechanism of oxidation of aromatic amines by peroxomonosulphate – a kinetic study
Author(s) -
Reddy Maddy Satyanarayan,
Rajanna K. C.,
Naseeruddin Ahmed
Publication year - 1995
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550271202
Subject(s) - chemistry , reaction rate constant , substrate (aquarium) , limiting , kinetics , kinetic energy , dielectric , computational chemistry , mechanical engineering , oceanography , physics , optoelectronics , quantum mechanics , engineering , geology
Oxidation of aromatic amines (substrate) by peroxomonosulphate (PMS) in phthalate buffers at various temperatures revealed first‐order dependence on [PMS] as well as [Substrate]. Rate of oxidation was found to increase with an increase in pH as well as dielectric constant (D) of the medium. The most plausible mechanism involving PMS − and substrate in rate limiting step was proposed. Hammett's plot of log‐rate constant versus σ deviated from linearity. Deviations were explained due to para resonance interaction energies. © 1995 John Wiley & Sons, Inc.