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Rausch等报道由二环戊二烯基二氯化铪与五氟苯基锂在低温、乙醚中按下式反应,得到含σ-碳-铪键的二环戊二烯基二(五氟苯基)铪: (η~5-C_5H_5)_2HfCl_2+2C_6F_5Li→(η~5-C_5H_5)_2Hf(C_6F_5)_2+2LiClSamuel等用同样反应合成了二环戊二烯基二苯基铪。按类似方法,我们合成了二环戊二烯基二(对甲苯基)铪-(η~5-C_5H_5)_2Hf(p-CH_3C_6H_4)_2(1)、二环戊二烯基二(邻甲苯基)
Rausch et al. Report that dicyclopentadienyl hafnium dichloride is reacted with lithium pentafluorophenoxide at low temperature in diethyl ether to give dicyclopentadienyl bis (pentafluorobenzene) with σ-carbon-hafnium bond ) Hafnium: (η ~ 5-C_5H_5) _2HfCl_2 + 2C_6F_5Li → (η ~ 5-C_5H_5) _2Hf (C_6F_5) _2 + 2LiClSamuel and so on were synthesized by the same reaction of dicyclopentadienyl diphenyl hafnium. In a similar manner, we synthesized dicyclopentadienyl bis (p-tolyl) hafnium- (η ~ 5-C_5H_5) _2Hf (p-CH_3C_6H_4) _2 )