申请人:Castro Pascal
公开号:US20130289229A1
公开(公告)日:2013-10-31
A complex of formula (I): wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R′
2
C—, —R′
2
C—CR′
2
—, —R′
2
Si—, —R′
2
Si—SiR′
2
—, —R′
2
Ge—, wherein each R′ is independently a hydrogen atom, C1-C20-hydrocarbyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; each R
1
is a C4-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring, optionally containing one or more heteroatoms belonging to groups 14-16, or is a C3-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring where the β-atom is an Si-atom; n is 0-3; each R
18
is the same or different and may be a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; each R
4
is a hydrogen atom or a C
1-6
-hydrocarbyl radical; each W is a 5 or 6 membered aryl or heteroaryl ring wherein each atom of said ring is optionally substituted with an R
5
group each R
5
is the same or different and is a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; and optionally two adjacent R
5
groups taken together can form a further mono or multicyclic ring condensed to W optionally substituted by one or two groups R
5
.
化学式(I)的复合物:其中M是锆或铪;每个X是一个sigma配体;L是一个二价桥,选择自—R′2C—、—R′2C—CR′2—、—R′2Si—、—R′2Si—SiR′2—、—R′2Ge—,其中每个R′独立地是氢原子、C1-C20-烃基、三(C1-C20-烷基)硅基、C6-C20-芳基、C7-C20-芳基烷基或C7-C20-烷基芳基;每个R1是在环戊二烯基环上β-原子处支链的C4-C20-烃基基团,可选地含有属于14-16族的一个或多个杂原子,或者是在β-原子处支链的C3-C20-烃基基团,其中β-原子是一个Si-原子;n为0-3;每个R18相同或不同,可以是一个C1-C20-烃基基团,可选地含有属于14-16族的一个或多个杂原子;每个R4是氢原子或C1-6-烃基基团;每个W是一个5或6成员的芳基或杂芳基环,其中该环的每个原子可选地用一个R5基团取代,每个R5相同或不同,是一个C1-C20-烃基基团,可选地含有属于14-16族的一个或多个杂原子;并且可选地,相邻的两个R5基团可以形成一个进一步的单环或多环环,与W融合,可选地用一个或两个基团R5取代。