A combination of phase-transfer and traditional alkylation strategies has been employed to synthesise sterically encumbered 1,3-di(cyclohexyl) and 1,3-di(tert-butyl) substituted indenes in multi-gram quantities. These indenyl ligands and sterically demanding alkyl cyclopentadienyl ligands have been used to prepare a series of [(η7-C7H7)Zr(η5-L)] (L = Cp and Ind) complexes by straightforward salt metathesis between [(η7-C7H7)ZrCl(tmeda)] and the corresponding sodium indenide or cyclopentadienide. All of these Zr complexes have been characterized by elemental analysis, NMR spectroscopy and single crystal X-ray diffraction. The structural information derived from these studies was employed to evaluate the steric demand of these ligands in a realistic manner.
                                    采用相转移和传统烷基化策略的结合,合成了空间位阻较大的1,3-二(环己基)和1,3-二(叔丁基)取代的
茚,并且产量达到数克。这些
茚基
配体和空间位阻较大的烷基
环戊二烯基
配体用于通过简单的盐交换反应,制备一系列[(η7-
C7H7)Zr(η5-L)](L = Cp 和 Ind)配合物,反应物为[(η7-    )ZrCl(tmeda)]与相应的
钠茚化物或
环戊二烯化物。所有这些
锆配合物都通过元素分析、核磁共振光谱和单晶X射线衍射进行了表征。这些研究获得的结构信息被用于以现实的方式评估这些
配体的空间需求。