名称:
                                Syndiospezifische polymerisation von propylen: 2- und 2,7-substituierte metallocenkomplex des typs (C13H8−nRnCR′2C5H4)MCl2 (n = 1,2; R  alkoxy, alkyl, aryl, hal; R′  Me, Ph; M  Zr, Hf)
                             
                            
                                摘要:
                                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.