The potentially tridentate Schiff base ligands [3,5-But2-2-(HO)C6H2CHNL] 1, on reaction with Me3Al at room temperature, afford the complexes [(3,5-But2-2-(O)C6H2CHNL)AlMe2] [L = CH2CH2NMe2 2a, (2-PhO)C6H4 2b, 2-CH2C5H4N 2c and 8-C9H6N (quinoline) 2d], 2a and 2c have been characterised crystallographically; further reaction of the dimethyl compounds with B(C6F5)3 affords the cationic systems [(3,5-But2-2-(O)C6H2CHNL)AlMe]+ 3a–d of which 3a and 3b are ethylene polymerisation catalysts.
潜在的三叉席夫碱
配体[3,5-But2-2-(HO)C6H2CHNL] 1 在室温下与 Me3Al 反应后,产生了络合物[(3,5-But2-2-(O)C6H2CHNL)AlMe2] [L = CH2CH2NMe2 2a、(2-PhO)
C6H4 2b、2-CH2C5H4N 2c 和 8-
C9H6N(
喹啉)2d],2a 和 2c 已经过晶体学表征;二甲基化合物与 B(
C6F5)3 进一步反应,可得到阳离子体系[(3,5-But2-2-(O)C6H2CHNL)AlMe]+ 3a-d,其中 3a 和 3b 是
乙烯聚合催化剂。