Seventeen new catalyst. precursors for the syndiospecific polymerization of propylene are presented. The new metallocene complexes are substituted in the positions 2 and 7 of the fluorenlidene fragment by MeO-, halogen-, alkyl- and aryl groups. The focus is directed on effective new synthetic routes to substituted fluorenes and the preparation of Be catalyst precursors. In addition first polymerization results are reported.