Collection of Czechoslovak Chemical Communications - digital archive 

Abstract

¹³C-NMR chemical shifts and ¹J(CH) and ³J(CH) coupling constants have been determined for a series of C₆H₅SO₂X derivatives (X = Cl, C₆H₅, Ona, OCH₃, OC₂H₅, OC₆H₅, NH₂, NHNH₂, N(CH₂)₅, NHC₆H₅) in hexadeuteriodimethyl sulphoxide solutions, and the substituent shift values of benzene nucleus have been calculated for the individual SO₂X groups,. These groups, carrying partial positive charge at the sulphur atom, have electron-acceptor effects on the benzene nucleus, and increasing electron-donor character of the substituent X is connected with a proportional increase of mesomeric acceptor influence on the benzene nucleus and with increase in absolute values of ¹J(CH).