ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 32, Number 5
JKCSEZ 32(5)
October 20, 1988 

Kinetic studies for the nucleophilic substitution reactions of benzyl halides(para-substituted benzyl bromides and benzyliodide) with substituted pyridines in MeOH-MeCN mixtures have been carried out in order to elucidate the reaction mechanism. Cross interaction coefficient, ρXY values suggested that the reactions between benzylhalides and substituted pyridines exhibit an dissocitive SN2 mechanism. Hammett (ρX, ρY), Brφnsted βN and solvatochromic correlation coefficient a, s, a/s values were illustrated. Kinetic results were compared between potential energy surface model and quantum mechanical model. The quantum mechanical approach showed to be consistent with kinetic results.