Fluorenylidenephosphines having a 2,4-di-t-butyl-6-methoxyphenyl, 2,4-di-t-butyl-6-(methoxymethyl)phenyl or 2,4-di-t-butyl-6-(phenoxymethyl)phenyl group were prepared. 31P NMR chemical shifts of the fluorenylidenephosphines indicated that electron-donating effects through space are not so strong between the alkoxy group and the double-bonded phosphorus atom. The structure of a tungsten carbonyl complex
具有2,4-二- Fluorenylidenephosphines吨丁基-6-
甲氧基苯基,2,4-二-吨-丁基-6-(甲氧基)苯基或2,4-二-吨-丁基-6-(苯氧基甲基)苯基组准备。
芴基亚膦的31 P NMR
化学位移表明,烷氧基和双键
磷原子之间通过空间的供电子作用不是很强。[2,4-二-
钨羰基络合物的结构吨丁基-6-(苯氧基甲基)苯基](
芴基)膦,通过X射线晶体学分析。