Synthesis and characterization of phosphine( thio)phenolate-based half-zirconocenes and their application in ethylene (co-)polymerization

doi:10.1039/c3dt51659h

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	Synthesis and characterization of phosphine( thio)phenolate-based half-zirconocenes and their application in ethylene (co-)polymerization
	Tang, Xiao-Yan 1,2; Long, Ying-Yun 1; Wang, Yong-Xia 1; Liu, Jing-Yu 1; Li, Yue-Sheng 1
刊名	DALTON TRANSACTIONS
	2014
卷号	43 期号:1 页码:222-230
ISSN号	1477-9226
DOI	10.1039/c3dt51659h
英文摘要	A series of novel half-zirconocenes containing phosphine-(thio) phenolate chelating ligands of the type Cp'Zr(thf)Cl-2[X-2-R-1-4-R-2-6-(PPh2)C6H2] (Cp' = C5Me5, 2a: X = O, R-1 = Ph, R-2 = H; 2b: X = O, R-1 = Bu-t, R-2 = H; 2c: X = O, R-1 = R-2 = Bu-t; 2d: X = O, R-1 = SiMe3, R-2 = H; 2e: X = S, R-1 = SiMe3, R-2 = H; Cp' = C5H5, 3b: X = O, R-1 = Bu-t, R-2 = H; 3c: X = O, R-1 = R-2 = Bu-t; 3d: X = O, R-1 = SiMe3, R-2 = H; 3e: X = S, R-1 = SiMe3, R-2 = H) have been synthesized in high yields (74-85%). These complexes were identified by H-1, C-13 and P-31 NMR as well as elemental analyses. Structural analysis for 2a-b and 2d revealed that these complexes adopt six-coordinate, distorted octahedral geometry around the zirconium center. These novel half-zirconocenes possessed high catalytic performance for ethylene polymerization at high temperature in the presence of MMAO. The phosphine-phenolate-based Cp* complexes produced high molecular weight polymers (M-W > 400 000), while the Cp analogues displayed much higher activities at high temperature. Complex 3c with MMAO showed a maximum ethylene polymerization activity of 17 580 kg mol(Zr)(-1) h(-1) at 75 degrees C. In addition, the Cp based complexes 3b-e could promote ethylene and 1-hexene copolymerization with high activities.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000327665200029
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/51291]
专题	中国科学院化学研究所
通讯作者	Liu, Jing-Yu
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Changchun Branch, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Tang, Xiao-Yan,Long, Ying-Yun,Wang, Yong-Xia,et al. Synthesis and characterization of phosphine( thio)phenolate-based half-zirconocenes and their application in ethylene (co-)polymerization[J]. DALTON TRANSACTIONS,2014,43(1):222-230.
APA	Tang, Xiao-Yan,Long, Ying-Yun,Wang, Yong-Xia,Liu, Jing-Yu,&Li, Yue-Sheng.(2014).Synthesis and characterization of phosphine( thio)phenolate-based half-zirconocenes and their application in ethylene (co-)polymerization.DALTON TRANSACTIONS,43(1),222-230.
MLA	Tang, Xiao-Yan,et al."Synthesis and characterization of phosphine( thio)phenolate-based half-zirconocenes and their application in ethylene (co-)polymerization".DALTON TRANSACTIONS 43.1(2014):222-230.