| abstract |
The invention provides a novel [NOON] tetradentate ligand fourth subgroup metal complex, which has the structure shown in formula (I): wherein, R 1 is hydrogen, halogen, C1-C30 alkyl, C6-C30 aryl or substituted aryl of C6-C30; R 2 is hydrogen, halogen, alkyl of C1-C30, aryl of C6-C30 or substituted aryl of C6-C30; R 3 is hydrogen, halogen, C1- C30 alkyl group, C6-C30 aryl group or C6-C30 substituted aryl group; X is halogen, C1-C30 alkyl group or C6-C30 aryl group; A is biphenyl or binaphthalene; M is the fourth Subgroup transition metals. The novel [NOON] tetradentate ligand fourth subgroup metal complex of the invention has good thermal stability. When used, it has the characteristics of low use amount of cocatalyst, high catalytic activity, good thermal stability and long catalytic life, and can catalyze the copolymerization of ethylene and 1-octene at the same time. |