A metallocene compound is represented by the formula (1):
AMX
n-1
wherein M is a transition metal atom having a coordination number of n selected from Group 3, 4, 5 or 6 of the Periodic Table of Elements, or a lanthanide metal atom, or actinide metal atom; A is a substituted monocyclic or polycyclic arenyl ligand pi-bonded to M, wherein said arenyl ligand includes at least one halogen substituent directly bonded to any sp
2
carbon atom at a bondable ring position of the ligand; and the or each X is a univalent anionic ligand, or two X are joined and bound to the metal atom to form a metallocycle ring, or two X are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand.
一种
金属茂化合物由式(1)表示:AMXn-1,其中M是从元素周期表的3、4、5或6组中选择的具有n个配位数的过渡
金属原子,或者是
镧系
金属原子或
锕系
金属原子;A是取代的单环或多环芳基
配体与M形成pi键结合,其中所述芳基
配体包括至少一个卤素取代基,直接与
配体上可成键的环位置的任何sp2碳原子结合;每个X是一个一价阴离子
配体,或两个X结合并与
金属原子结合形成
金属茂环,或两个X结合形成螯合
配体、二烯
配体或烷基
亚胺配体。