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Manastyrskyj 等首次报道了重稀土环戊二烯二氯化物 C_5H_5L_nC(?)_2(Ln=Sm～Lu)的合成,但未得到相应的轻稀土环戊二烯基二氯化物。他们把这一结果归因于镧系收缩和配位不
Manastyrskyj et al first reported the synthesis of heavy rare earth cyclopentadiene dichloride C_5H_5L_nC (?) _2 (Ln = Sm ~ Lu), but did not get the corresponding light rare earth cyclopentadienyl dichloride. They attributed this result to lanthanide contraction and coordination