Highly efficient ethylene/norbornene copolymerization by o-Di(phenyl)phosphanylphenolate-based half-titanocene complexes

	Highly efficient ethylene/norbornene copolymerization by o-Di(phenyl)phosphanylphenolate-based half-titanocene complexes
	Tang XY ; Wang YX ; Li BX ; Liu JY ; Li YS
刊名	journal of polymer science part a-polymer chemistry
	2013
卷号	51 期号:7 页码:1585-1594
关键词	ETHENE-NORBORNENE COPOLYMERIZATION OLEFIN POLYMERIZATION CATALYSTS CONSTRAINED-GEOMETRY CATALYSTS FOCK-SLATER CALCULATIONS ZIEGLER-NATTA CATALYSIS IMINE CHELATE LIGANDS C-13 NMR-SPECTRA ETHYLENE POLYMERIZATION TITANIUM COMPLEXES SANDWICH CATALYSTS
ISSN号	0887-624x
通讯作者	liu jy
中文摘要	a series of o-di(phenyl)phosphanylphenolate-based half-titanocene complexes cpticl2[o-2-r1-4-r2-6-(ph2p)c6h2] (cp = c5h5, 2a: r1 = r2 = h; 2b: r1 = f, r2 = h; 2c: r1 = ph, r2 = h; 2d: r1 = sime3, r2 = h; 2e: r1 = tbu, r2 = h; 2f: r1 = r2 = tbu) have been synthesized in high yields (6587%) by treating cpticl3 with 1.0 equiv of the deprotonated ligands in thf. the 1h and 31p nmr spectra indicated that the phosphorus is not coordinated to titanium in complexes 2ac, but is coordinated to titanium in complexes 2df. structures for 2cf were further confirmed by x-ray crystallography. complex 2c is essentially a four-coordinate tetrahedral geometry, whereas complexes 2d-f adopt five-coordinate distorted squarepyramid geometry around the titanium center. all complexes exhibited low to moderate activities toward homopolymerization of ethylene. excitingly, they displayed excellent ability to copolymerize ethylene with norbornene, and catalytic activity was more than 100 times larger than that of ethylene homopolymerization in the case of ph3cb(c6f5)4/ibu3al as cocatalyst, affording the copolymers with high comonomer incorporations. moreover, dft calculations study had been performed to shed light on the active species and the fundamental role of nbe in improving the catalytic activity. (c) 2013 wiley periodicals, inc. j. polym. sci., part a: polym. chem. 2013, 51, 1585-1594
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000315495100011
公开日期	2014-04-16
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49955]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Tang XY,Wang YX,Li BX,et al. Highly efficient ethylene/norbornene copolymerization by o-Di(phenyl)phosphanylphenolate-based half-titanocene complexes[J]. journal of polymer science part a-polymer chemistry,2013,51(7):1585-1594.
APA	Tang XY,Wang YX,Li BX,Liu JY,&Li YS.(2013).Highly efficient ethylene/norbornene copolymerization by o-Di(phenyl)phosphanylphenolate-based half-titanocene complexes.journal of polymer science part a-polymer chemistry,51(7),1585-1594.
MLA	Tang XY,et al."Highly efficient ethylene/norbornene copolymerization by o-Di(phenyl)phosphanylphenolate-based half-titanocene complexes".journal of polymer science part a-polymer chemistry 51.7(2013):1585-1594.