Reaction of the appropriate MCl3 and 2Li-[C5H3(SiMe3)2] in tetrahydrofuran affords [Mη-[C5H3-(SiMe3)2]}2Cl)2](M = Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu); the X-ray structure of the first early lanthanocene chloride [(Prη-[C5H3-(SiMe3)2]}2Cl)2](the Sc and Yb complexes are isostructural) shows the Pr atoms to be in a distorted tetrahedral environment, and important molecular parameters include PrâClav.. 2·81, PrâC(η-)av. 2·76 Ã
, Pr ⦠Prâ² 4·372(1)Ã
, ClâPrâClâ² 78, and PrâClâPrâ² 102 °.
在
四氢呋喃中,适当的MCl3与2Li-[C5H3(SiMe3)2]反应得到[Mη-[C5H3-(SiMe3)2]}2Cl)2](M = Sc、Y、La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb或Lu);第一个早期
镧锆氯化物的X射线结构[(Prη-[C5H3-(SiMe3)2]}2Cl)2](Sc和Yb配合物是等结构的)显示Pr原子处于扭曲的四面体环境中,重要的分子参数包括Pr–Cl平均.. 2·81,Pr–C(η-)平均 2·76 Å,Pr … Pr' 4·372(1) Å,Cl–Pr–Cl' 78,Pr–Cl–Pr' 102 °。