| 摘要 |
<p>Racemic metallocene compounds having a bis(4-naphthylcyclo pentadienyl) ligand which include compounds represented by general formula (1) and its enantiomer, wherein M represents titanium, zirconium or hafnium; Y represents carbon, silicon, germanium or tin; X?1 and X2¿ independently represent each halogeno or C¿1-20? hydrocarbyl; and R?1, R2, R3, R4, R5, R6, R7, R8 and R9¿ independently represent each hydrogen, halogeno, C¿1-20? alkyl, C7-20 aralkyl, C6-20 aryl, substituted silyl having C1-20 hydrocarbyl, C1-20 alkoxy, C7-20 aralkyloxy or C6-20 aryloxy; provided that each group may be further halogenated.</p> |
