作者:Oliver M. Heigl、Martin A. Herker、Wolfgang Hiller、Frank H. Köhler、Andreas Schell
DOI:10.1016/s0022-328x(98)00924-3
日期:1999.2
that are bridged by the sp2-carbon center of a vinylidene group. Starting from 6-N,N-dimethylamino-6-methylfulvene, the iron-containing intermediates were a pentamethylferrocenyl-substituted fulvene and an ethene that was geminally disubstituted by a Cp anion and a pentamethylferrocenyl moiety. Besides other methods, the ferrocenes were characterized by NMR spectroscopy including full signal assignment
1,1-Bis(1“,2”,3“,4”,5“-五甲基二茂铁-1'-基)乙烯(6)被合成为两个由sp 2-碳中心桥接的茂金属的原型亚乙烯基的基团。从6- N,N-二甲基氨基-6-甲基富烯开始,含铁中间体是五甲基二茂铁基取代的富烯和被Cp阴离子和五甲基二茂铁基部分双取代的乙烯。除其他方法外,二茂铁还通过包括全部信号分配在内的NMR光谱进行了表征。双金属化合物6在循环伏安图中显示了两个二茂铁之间的适度相互作用(ΔE 1/2= 150 mV)。根据X射线晶体结构分析,化合物6是扭曲分子;亚乙烯基部分和相邻二茂铁的Cps不是共面的。