SEARCH Articles Figures Tables Benzyl sigma complex Carbon sigma-bonded complexes Carbon sigma-bonded complexes palladium Electrophilic Aromatic Substitutions via Sigma Complexes (Ar-SE Reactions) Electrophilic aromatic substitution sigma complex Intermediates Wheland sigma complex Overview of Sigma Complexes Sigma Sigma complex intermediate Sigma complex stable Sigma complexes and CT-bond interactions Sigma complexes and a-bond interactions Sigma complexes, generalizations Sigma-bond complexes Sigma-bonded complexes Sigma-complexes, formation The Reaction Intermediate or Sigma-Complex Approach