Abstract

T. M. Sukul, S. L. Bonde^*, R. P. Bhadane and V. T. Dangat

DOI : http://dx.doi.org/10.13005/ojc/310438

The rapid kinetics of chlorination of regioisomers of the nitrophenol by molecular chlorine in the presence of chloride ion in aqueous solution has been studied using rotating platinum electrode (RPE). The chloride ion has a catalytic effect on the chlorination reaction. The mechanism suggested explaining the catalytic effect of chloride ion postulates a longer mean life for Cl-Cl dipole induced by the aromatic substrate by electron rearrangement with the chloride ion, which facilitate the electrophilic attack of Cl-Cl on the aromatic substrate in rate determining step. Hence the specific reaction rate varies linearly with the concentration of chloride ion.

Rapid Chlorination; Rotating Platinum Electrode; Kinetics

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