A metallocene complex is represented by the the formula
(C
p
R
5
)
n
MX
k
where C
p
(each occurrence) is a cyclopentadienyl group; each of the five R substituents on the or each cyclopentadienyl group is independently selected from hydrogen, C
1
to C
30
substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure, and SiR′
2
NR″
2
where each of the two R′ substituents is independently selected from hydrogen, C
1
to C
30
substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R′ substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure, and each of the two R″ substituents is independently selected from C
2
to C
30
substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R″ substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure; n is 1 or 2; M is a metal of valence m from Groups 4 to 11 of the Periodic Table of Elements, k is equal to m minus n and the or each X substituent is a univalent anionic ligand, or two X substituents are joined and bound to the metal atom to form a metallocycle ring, or two X substituents are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand, provided that at least one R substituent on the or one cyclopentadienyl group is SiR′
2
NR″
2
, provided that at least one R substituent on at least one C
p
is SiR′
2
NR″
2
and provided that one or the C
p
may be bridged by a bridging group to another C
p
group, or a heteroatom containing group, where the bridging group replaces one R group on the C
p
group(s) or a hydrogen on a heteratom containing group.
一个
金属茂配合物的
化学式为(CpR5)nMXk,其中Cp代表
环戊二烯基团,每个
环戊二烯基团上的五个R取代基独立地选自氢、C1到C30的取代或未取代的烃基、卤代烃基、
硅烷基烃基或
硅烷基卤代烃基,其中两个相邻的R取代基可以连接形成饱和、部分不饱和或芳香单环或多环环结构,以及SiR'2NR"2,其中两个R'取代基独立地选自氢、C1到C30的取代或未取代的烃基、卤代烃基、
硅烷基烃基或
硅烷基卤代烃基,其中两个相邻的R'取代基可以连接形成饱和、部分不饱和或芳香单环或多环环结构,而每个R"取代基独立地选自C2到C30的取代或未取代的烃基、卤代烃基、
硅烷基烃基或
硅烷基卤代烃基,其中两个相邻的R"取代基可以连接形成饱和、部分不饱和或芳香单环或多环环结构;n为1或2;M是元素周期表4到11族的价数为m的
金属,k等于m减n,而每个X取代基是一个单价的阴离子
配体,或者两个X取代基连接并绑定到
金属原子形成茂环,或者两个X取代基连接形成螯合
配体、二烯基
配体或烷基
亚胺配体,前提是至少一个
环戊二烯基团上的一个R取代基是SiR'2NR"2,至少一个Cp上的一个R取代基是SiR'2NR"2,并且一个或多个Cp可以通过桥接基与另一个Cp团或含杂原子的基团连接,其中桥接基替换Cp团上的一个R基团或含杂原子的基团上的一个氢原子。