The invention relates to a metallocene complex according to formula (1) M is a metal selected from lanthanides or transition metals from group 3, 4, 5 or 6 of the Periodic System of the Elements, Q is an anionic ligand to M, k is the number of Q groups and equals the valence of M minus 2, X is a cyclic bridging group that is bonded to a carbon atom of the cyclopentadienyl ligand and to nitrogen, Z1 and Z4 are identical or different and can be chosen from hydrogen or a hydrocarbon radical with 1-20 carbon atoms; Z2 and Z3 are connected to form an indenyl or tetrahydroindenyl ring system and R is chosen from hydrogen or a hydrocarbon radical with 1-20 carbon atoms. Also claimed are compositions comprising the metallocene complex, a process for the preparation, a process for the polymerization of olefin polymers in the presence of the metallocene complex. A more specific embodiment of the above Markush formula is formula (5).
                            该发明涉及一种配位基复合物,其
化学式如下所示(1):M为来自元素周期表第3、4、5或6族的
镧系元素或过渡
金属,Q为
配体阴离子,k为Q基团的数量,等于M的化合价减2,X为与
环戊二烯基
配体的碳原子和氮结合的环状桥联基团,Z1和Z4相同或不同,可选择为氢或具有1-20个碳原子的烃基,Z2和Z3相连形成
茚基或四氢
茚基环系统,R为氢或具有1-20个碳原子的烃基。还包括包含该配位基复合物的组合物,其制备方法,以及在该配位基复合物存在下的烯烃聚合的方法。上述Markush式的更具体实施形式为
化学式(5)。