The present invention relates to a A metal complex of formula 1
CyYMLjXn (formula 1)
wherein
Cy is a cyclopentadienyl-type ligand;
M is a metal of group 4;
L is a neutral Lewis basic ligand wherein the number of said neutral ligands "j" is in the range of 0 to the amount that satisfies the 18-electron rule;
X is an anionic ligand; n is an integer denoting the number of anionic ligands X and is 1 or 2, preferably is 2;
Y is a cyclic amidine-containing ligand moiety represented by formula 2
wherein the amidine-containing ligand is covalently bonded to the metal M via the imine nitrogen atom N2;
S is a -CH2- unit, and t is the integer number denoting the number of S and is in the range of 1-4, more preferably in the range of 1-2, most preferably is 1;
Sub1 is an aliphatic cyclic or linear substituent comprising a group 14 atom through which Sub1 is bonded to the amine nitrogen atom N1;
Sub2 is an optionally substituted C2 unit in which the 2 carbon atoms may be SP2 or sp3 hybridized.
本发明涉及一种式 1 的
金属络合物
CyYMLjXn(式 1)
其中
Cy 是
环戊二烯类
配体;
M 是第 4 组
金属
L 是中性路易斯碱性
配体,其中所述中性
配体 "j "的数量范围为 0 至满足 18 电子规则的数量;
X 是阴离子
配体;n 是表示阴离子
配体 X 数目的整数,为 1 或 2,最好为 2;
Y 是环状含脒
配体,由式 2 表示
其中,含脒
配体通过
亚胺氮原子 N2 与
金属 M 共价键合;
S 是-
CH2-单元,t 是表示 S 个数的整数,在 1-4 之间,更优选在 1-2 之间,最优选为 1;
Sub1 是脂肪族环状或线性取代基,包括一个基团 14 原子,Sub1 通过该基团与胺氮原子 N1 键合;
Sub2 是任选取代的 C2 单元,其中 2 个碳原子可以是
SP2 或
SP3 杂化。