申请人:E. I. du Pont de Nemours and Company
公开号:US07230107B1
公开(公告)日:2007-06-12
Provided are complexes of the formula:
wherein:
M is selected from Ti, Zr, Hf, Nb, Re, Sn, and Ge,
R1, R2, R3, R4, R5, R6, R7, and R8 are each independently F, Cl, CF3, diarylamine, carbazolyl, alkoxy, cyano, alkyl or aryl; and
a, b, c, d, e, f, g, and h are each 0, 1, 2, or 3;
provided that at least one of R1, R2, R3, R4, R5, R6, R7, and R8 is diarylamine or carbazolyl; or R1, R4, R5, and R7 are not all the same; or R2, R3, R6, and R8 are not all the same.
提供的公式如下:
其中:
M 从 Ti、Zr、Hf、Nb、Re、Sn 和 Ge 中选择,
R1、R2、R3、R4、R5、R6、R7 和 R8 分别独立地为 F、Cl、CF3、二芳胺、咔唑基、烷氧基、氰基、烷基或芳基;以及
a、b、c、d、e、f、g 和 h 分别为 0、1、2 或 3;
前提是 R1、R2、R3、R4、R5、R6、R7 和 R8 中至少有一个是二芳胺或咔唑基;或者 R1、R4、R5 和 R7 不全相同;或者 R2、R3、R6 和 R8 不全相同。