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
金属烯化合物可以用公式(1)表示:
AMX
n-1
其中,M是具有配位数n的过渡
金属原子,选自元素周期表第3、4、5或6族,或为
镧系
金属原子,或
锕系
金属原子;A是与M以π键结合的取代的单环或多元环芳基
配体,其中所述芳基
配体包括至少一个直接键合到
配体的可键合环位上的任意sp2碳原子上的卤素取代基;而X是单价阴离子
配体,或者两个X连接并与
金属原子结合形成一个
金属环烯环,或者两个X连接形成一个螯合
配体、二烯
配体或烷基亚烯
配体。