ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 36, Number 2
JKCSEZ 36(2)
April 20, 1992 

Reaction of N,N-dimethylaniline(N,N-DMA) and iodine in CHCl3, CH2Cl2 : CHCl3(1:1), and CH2Cl2 has been studied kinetically by using conductivity method. Pseudo first-order rate constants (k_obs) and second-order rate constants (k_obs/[N,N-DMA]) are dependent on the N,N-DMA concentration. Second-order rate constants obtained were decreased with increasing N,N-DMA concentration. We analysed these results on the basis of formation of charge transfer complex as a reaction intermediate. From the construction of reaction scheme and activation parameters for the formation and transformation of charge transfer complex. The equilibrium constants decreased when the dielectric constant of solvent was increased, and the value is 1.9~4.2M^-1. The rate of transformation are markedly affected by the solvent polarity. ΔH≠ is 6.3-12.6kJ/mol, and ΔS≠ is large negative value of -234J/mol K.