Substituent effects in electrophilic cleavage reactions of para-substituted benzylpenta-aquochromium cations by molecular halogens
Abstract
The kinetics of the reaction of p-Z-C6H4CH2Cr(OH2)52+ with halogens in aqueous solution obey a second-order rate expression in which k2 follows the Hammett equation for Br2(ρ=– 1.29) and I2(ρ=– 0.81).