Abstract The nucleophilic addition reactions of both the non-substituted and p-substituted benzenesulfinic acids with 2-chloro-and 2-bromoacrylonitriles have been studied. The structures of the 3-benzenesulfonyl-2-halogenopropanenitriles thus obtained were confirmed by microanalytical and spectral methods. The basic kinetic parameters of the reactions were determined and some local electronic descriptors concerning the reaction ...