Titanium(iv) catalysts with ancillary imino-spiroketonato ligands: Synthesis, structure and olefin polymerization

doi:10.1039/c5dt01104c

CORC > 北京大学 > 化学与分子工程学院

	Titanium(iv) catalysts with ancillary imino-spiroketonato ligands: Synthesis, structure and olefin polymerization
	Ma, Yuguo ; Lobkovsky, Emil B. ; Coates, Geoffrey W.
刊名	Dalton Transactions
	2015
DOI	10.1039/c5dt01104c
英文摘要	New titanium(iv) complexes having two bidentate β-iminoethyl-spiro[4,5]decan-6-onato ligands with various N-aryl substituents have been synthesized. X-ray crystal structure analysis reveals that these titanium complexes all exhibit a C2-symmetric conformation with a distorted octahedral geometry, although the specific orientation of the ligands around the titanium center varies with the identity of the N-aryl moiety. Upon activation with methylaluminoxane (MAO), these complexes catalyze the polymerization of ethylene and propylene. In the case of ethylene, most complexes exhibit the characteristics of a living polymerization between 0 °C and 25 °C, producing polyethylenes with narrow molecular weight distributions and number average molecular weights up to 100000 g/mol. Depending on the N-aryl substituents, polymerizations of propylene result in products with tacticity ranging from slightly syndiotactic to slightly isotactic. ? The Royal Society of Chemistry 2015.; EI; 27; 12265-12272; 44
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/436039]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Ma, Yuguo,Lobkovsky, Emil B.,Coates, Geoffrey W.. Titanium(iv) catalysts with ancillary imino-spiroketonato ligands: Synthesis, structure and olefin polymerization[J]. Dalton Transactions,2015.
APA	Ma, Yuguo,Lobkovsky, Emil B.,&Coates, Geoffrey W..(2015).Titanium(iv) catalysts with ancillary imino-spiroketonato ligands: Synthesis, structure and olefin polymerization.Dalton Transactions.
MLA	Ma, Yuguo,et al."Titanium(iv) catalysts with ancillary imino-spiroketonato ligands: Synthesis, structure and olefin polymerization".Dalton Transactions (2015).