申请人:Voskoboynikov Z. Alexander
公开号:US20060183874A1
公开(公告)日:2006-08-17
A metallocene compound is represented by the formula (1):
A
2
Y
y
MX
n-2
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;
each A is independently a substituted polycyclic arenyl ligand pi-bonded to M, each A ligand includes at least one halogen substituent directly bonded to an sp
2
carbon at a bondable ring position and, when each A is a substituted indenyl ligand and y is equal to one and the ligand includes at least one chloro, bromo or iodo substituent at the 4, 5, or 6 position of the indenyl ligand, then A also includes at least one other substituent in the indenyl ligand selected from hydrocarbyl, substituted hydrocarbyl, halogen, halocarbyl, substituted halocarbyl, silylcarbyl, substituted silylcarbyl, germylcarbyl, substituted germylcarbyl, or other heteroatom substituents wherein the heteroatom is bonded directly to a ring carbon of the ring structure ligand and is boron, a Group 15 atom, or a Group 16 atom, preferably boron, nitrogen, oxygen, phosphorus, or sulfur; Y is an optional bridging group containing at least one Group 13, 14, 15, or 16 element and is bonded to any single position of the ring structure of A, y is zero or 1, indicating the absence (y=0) or presence (y=1) of Y; 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; provided that when y is equal to 1, then A is not 5,6-dichloroindenyl or an indenyl group having a fluoro- or chloro substituent at the 7 position and a hydrocarbyl or substituted hydrocarbyl substituent at the 4 position, and provided further that when y is equal to 0, then A is not 5,6-difluoroindenyl.
一个
金属茂化合物的
化学式为(1):A2YyMXn-2,其中:M是从元素周期表的3、4、5或6组中选择的配位数为n的过渡
金属原子,或者是
镧系
金属原子或
锕系
金属原子;每个A都是独立的取代多环芳基
配体,与M通过π键相连,每个A
配体包括至少一个卤素取代基,直接连接到可结合环位置的sp2碳,当每个A是取代
吲哚基并且y等于1,
配体包括
吲哚基的4、5或6位置至少一个
氯、
溴或
碘取代基时,A还包括至少一个
吲哚基中的其他取代基,所选取代基包括烃基、取代烃基、卤素、卤代烃基、取代卤代烃基、
硅烷基、取代
硅烷基、
锗烷基、取代
锗烷基或其他杂原子取代基,其中杂原子直接与环结构
配体的环碳键合,杂原子是
硼、15族元素或16族元素,优选
硼、氮、氧、
磷或
硫;Y是一个可选的桥接基团,其中至少包含一个13、14、15或16族元素,并与A的环结构的任何单个位置键合,y为0或1,表示Y的缺失(y=0)或存在(y=1);每个X是一个一价阴离子
配体,或者两个X结合并与
金属原子结合形成
金属环状化合物,或者两个X结合形成螯合
配体、二烯
配体或烷基亚甲基
配体;但当y等于1时,A不是
5,6-二氯吲哚基或在7位置具有
氟或
氯取代基和在4位置具有烃基或取代烃基取代基的
吲哚基团,当y等于0时,A不是
5,6-二氟吲哚基。