SEARCH Articles Figures Tables Acylium cations electrophilic aromatic substitution Aromatic cation radicals, electrophilic reactions Aromatic cations Aromaticity 671 cations Cationic aromatics Cyclohexadienyl cation intermediate in electrophilic aromatic Cyclohexadienyl cation, intermediate electrophilic aromatic substitution Electrophilic aromatic substitution arene radical cations Electrophilic aromatic substitution reactions cationic electrophile formation Polar Cycloadditions in Which Cationic Aromatic Systems Act as Electrophiles Radical cations in electrophilic aromatic