1978年Lappert等人首先合成了二(三甲硅基环戊二烯基)稀土氯化物[Li(THF)](Me_3SiC_5H_4)_2LnCl] (Ln=Y,Yb)和Yb(C_5H_4SiMe_3)_2。三甲硅基环戊二烯基稀土二氯化物,则未见报导.采用三甲硅基环戊二烯作为合成稀土金属有机化合物的配体,不仅可以增加所合成的稀土化合物在非极性溶剂中的溶解度,而且在反应过程中可以减小歧化反应的发生,得到所要求的产物.我们探索了三甲硅基环戊二烯基稀土二氯化物的合成,并对所得到的产物进行了鉴定. Lappert et al first synthesized bis (trimethylsilylcyclopentadienyl) rare earth chloride [Li (THF)] (Me_3SiC_5H_4) _2LnCl] (Ln = Y, Yb) and Yb (C_5H_4SiMe_3) _2 in 1978. Trimethylsilylcyclopentadienyl rare earth dichloride has not been reported.Using trimethylsilylcyclopentadiene as a ligand for the synthesis of rare earth metal organic compounds, not only can increase the synthesis of rare earth compounds in non-polar solvents , And the disproportionation reaction can be reduced during the reaction to obtain the desired product.We have explored the synthesis of trimethylsilylcyclopentadienyl rare earth dichloride and identified the obtained product.