StrongLewisacids,thatis,electronacceptors,areoftencapableofinitiatingadditionpolymerizationofmonomerswithelectron-richsubstituentsadjacenttothedoublebond①.CationiccatalystsaremostcommonlymetaltrihalidessuchasAlCl3orBF3.Thesecompounds,althoughelectricallyn...[继续阅读]