Homo- and Heteroligated Salicylaldiminato Titanium Complexes with   Different Substituents Ortho to the Phenoxy Oxygens for Ethylene and   Ethylene/1-Hexene (Co)polymerization

doi:10.1021/ma5017677

CORC > 北京大学 > 化学与分子工程学院

	Homo- and Heteroligated Salicylaldiminato Titanium Complexes with Different Substituents Ortho to the Phenoxy Oxygens for Ethylene and Ethylene/1-Hexene (Co)polymerization
	Yao, Erdong ; Wang, Jianchun ; Chen, Zhongtao ; Ma, Yuguo
刊名	macromolecules
	2014
关键词	IMINE CHELATE LIGANDS OLEFIN POLYMERIZATION CATALYSTS COPOLYMERIZATION BEHAVIOR PROPENE POLYMERIZATION ZIRCONIUM COMPLEXES BLOCK-COPOLYMERS C-13 NMR PROPYLENE IDENTIFICATION POLYETHYLENE
DOI	10.1021/ma5017677
英文摘要	A series of homoligated (1c-1e) and heteroligated (2a-2e) salicylaldiminato titanium dichloride complexes with different substituents ortho to the phenoxy oxygens were efficiently prepared. X-ray diffraction studies on these new dichloride complexes 2b, 2d, and 2e reveal a distorted octahedral coordination of the central metal. In the presence of dried methylaluminoxane, all the complexes exhibit high ethylene polymerization productivities. Surprisingly, complex 1d incorporating an o-(trimethylsilyl)ethynyl group displays the highest activity [5.26 X 10(3) kg of polyethylenes (mol Ti)(-1) h(-1)]. In ethylene/1-hexene copolymerization, the heteroligated complexes 2a-2e display improved activities and intermediate incorporation ability compared with their homoligated counterparts 1a-1f. The activity and incorporation ability for 1-hexene are highly dependent on the nature of the ortho-substituents. Among them, (trimethylsilyl)ethynyl-substituted precatalyst (1d) achieves the highest incorporation ratio (27.3 mol %), while ethynyl-substituted precatalyst (2c) achieves the highest copolymerization activity [2.89 X 10(3) kg of copolymers (mol Ti)(-1) h(-1)].; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000346325300005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Polymer Science; SCI(E); 1; ARTICLE; ygma@pku.edu.cn; 23; 8164-8170; 47
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/206969]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Yao, Erdong,Wang, Jianchun,Chen, Zhongtao,et al. Homo- and Heteroligated Salicylaldiminato Titanium Complexes with Different Substituents Ortho to the Phenoxy Oxygens for Ethylene and Ethylene/1-Hexene (Co)polymerization[J]. macromolecules,2014.
APA	Yao, Erdong,Wang, Jianchun,Chen, Zhongtao,&Ma, Yuguo.(2014).Homo- and Heteroligated Salicylaldiminato Titanium Complexes with Different Substituents Ortho to the Phenoxy Oxygens for Ethylene and Ethylene/1-Hexene (Co)polymerization.macromolecules.
MLA	Yao, Erdong,et al."Homo- and Heteroligated Salicylaldiminato Titanium Complexes with Different Substituents Ortho to the Phenoxy Oxygens for Ethylene and Ethylene/1-Hexene (Co)polymerization".macromolecules (2014).