Treatment of aryliron complexes [CpFe(CO) 2 Ar] with styrenes in boiling xylene affords the corresponding stilbenes. The aryliron complexes, which become active upon heating, serve as arylating agents in the reaction. ... Treatment of aryliron complexes [CpFe(CO) 2 Ar] with styrenes in boiling xylene affords the corresponding stilbenes. The aryliron complexes, which become active upon heating, serve as arylating agents in the reaction. ... Treatment of [CpFe(CO) 2 (4-tolyl)] ...