A series of triplet 9-triptycyl(aryl)carbenes, where aryl groups are phenyl, 1- and 2-naphthyl, and 9-anthryl, is generated by photolysis of the corresponding diazomethanes and observed directly by spectroscopic means. Their structures are characterized by electron spin resonance (ESR) spectroscopy in a 2-methyltetrahydrofuran matrix at 77 K, and the reactivities are investigated by laser flash photolysis
一系列三线态 9-三苯乙烯基(芳基)卡宾,其中芳基是苯基、1-和 2-萘基以及 9-蒽基,通过相应重氮甲烷的光解产生并通过光谱方法直接观察。它们的结构通过 77 K 下 2-甲基四氢呋喃基质中的电子自旋共振 (ESR) 光谱表征,并且在室温下在脱气苯溶液中通过激光闪光光解研究反应性。将数据与带有一系列取代基(即氢、苯基、萘基和蒽基)的其他芳基卡宾的数据进行比较,揭示了三线态芳基卡宾的结构和反应性之间的有趣关系。