Due to purely steric effects of acridine units, acenaphthylene-1,2-diyldi(9-acridine) has a long CC bond [1.3789(19) Å] while maintaining its sp2 hybridized nature and bond order.
由于吖啶单元的纯立体效应,苊烯-1,2-二基二(9-吖啶)具有较长的 CC 键 [1.3789(19) Å],同时保持了其 sp2 杂化性质和键序。