| 摘要 |
Disubstituted or polysubstituted cyclopentadiene compound in which as least one substituent is of the form -RDR'n, where R is a bonding group between the cyclopentadiene and the DR'n group, D is a hetero atom chosen from group 15 or 16 of the Periodic System of the Elements, R' is a substituent and n is the number of R' groups bonded to D, and in which at least one of the other substituents is an aralkyl group. Metal complexes in which at least one of these cyclopentadiene compounds is present as a ligand are useful as catalysts for the polymerisation of alpha-olefins. |
