Active Intermediates in Ethylene Polymerization over Titanium Bis(phenoxyimine) Catalysts

Konstantin P. Bryliakov; Evgenii A. Kravtsov; Dale A. Pennington; Simon J. Lancaster; Manfred Bochmann; Hans H. Brintzinger; Evgenii P. Talsi

doi:10.1021/om0505920

Active Intermediates in Ethylene Polymerization over Titanium Bis(phenoxyimine) Catalysts

Konstantin P. Bryliakov, Evgenii A. Kravtsov, Dale A. Pennington, Simon J. Lancaster, Manfred Bochmann, Hans H. Brintzinger, Evgenii P. Talsi

Research output: Contribution to journal › Article › peer-review

68 Citations (Scopus)

Abstract

Reactive intermediates in living olefin polymerization over homogeneous catalysts based on bis[N-(3-tert-butylsalicylidene)-2,3,4,5,6-pentafluoroanilinato]titanium(IV) dichloride (L₂TiCl₂) have been studied. Outer sphere ion pairs [L₂TiMe(S)]⁺[Me-MAO]^- and [L₂TiMe(S)]⁺[B(C₆F₅)₄]^- (S = solvent molecule), formed by activation of L₂TiCl₂ with MAO or with AlMe₃/[CPh₃]⁺[B(C₆F₅)₄]^-, and reactions of these ion pairs with ethene to afford chain-propagating species [L₂TiP]⁺[Me-MAO]^- and [L₂TiP]⁺[B(C₆F₅)₄]^- (P = growing polymeryl chain) have been characterized by ¹H, ¹³C, and ¹⁹F NMR spectroscopy.

Original language	English
Pages (from-to)	5660-5664
Number of pages	5
Journal	Organometallics
Volume	24
Issue number	23
DOIs	https://doi.org/10.1021/om0505920
Publication status	Published - 2005

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10.1021/om0505920

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@article{93083f316ee34eab854e699caf5aae16,

title = "Active Intermediates in Ethylene Polymerization over Titanium Bis(phenoxyimine) Catalysts",

abstract = "Reactive intermediates in living olefin polymerization over homogeneous catalysts based on bis[N-(3-tert-butylsalicylidene)-2,3,4,5,6-pentafluoroanilinato]titanium(IV) dichloride (L2TiCl2) have been studied. Outer sphere ion pairs [L2TiMe(S)]+[Me-MAO]- and [L2TiMe(S)]+[B(C6F5)4]- (S = solvent molecule), formed by activation of L2TiCl2 with MAO or with AlMe3/[CPh3]+[B(C6F5)4]-, and reactions of these ion pairs with ethene to afford chain-propagating species [L2TiP]+[Me-MAO]- and [L2TiP]+[B(C6F5)4]- (P = growing polymeryl chain) have been characterized by 1H, 13C, and 19F NMR spectroscopy.",

author = "Bryliakov, {Konstantin P.} and Kravtsov, {Evgenii A.} and Pennington, {Dale A.} and Lancaster, {Simon J.} and Manfred Bochmann and Brintzinger, {Hans H.} and Talsi, {Evgenii P.}",

year = "2005",

doi = "10.1021/om0505920",

language = "English",

volume = "24",

pages = "5660--5664",

journal = "Organometallics",

issn = "0276-7333",

publisher = "American Chemical Society",

number = "23",

}

TY - JOUR

T1 - Active Intermediates in Ethylene Polymerization over Titanium Bis(phenoxyimine) Catalysts

AU - Bryliakov, Konstantin P.

AU - Kravtsov, Evgenii A.

AU - Pennington, Dale A.

AU - Lancaster, Simon J.

AU - Bochmann, Manfred

AU - Brintzinger, Hans H.

AU - Talsi, Evgenii P.

PY - 2005

Y1 - 2005

N2 - Reactive intermediates in living olefin polymerization over homogeneous catalysts based on bis[N-(3-tert-butylsalicylidene)-2,3,4,5,6-pentafluoroanilinato]titanium(IV) dichloride (L2TiCl2) have been studied. Outer sphere ion pairs [L2TiMe(S)]+[Me-MAO]- and [L2TiMe(S)]+[B(C6F5)4]- (S = solvent molecule), formed by activation of L2TiCl2 with MAO or with AlMe3/[CPh3]+[B(C6F5)4]-, and reactions of these ion pairs with ethene to afford chain-propagating species [L2TiP]+[Me-MAO]- and [L2TiP]+[B(C6F5)4]- (P = growing polymeryl chain) have been characterized by 1H, 13C, and 19F NMR spectroscopy.

AB - Reactive intermediates in living olefin polymerization over homogeneous catalysts based on bis[N-(3-tert-butylsalicylidene)-2,3,4,5,6-pentafluoroanilinato]titanium(IV) dichloride (L2TiCl2) have been studied. Outer sphere ion pairs [L2TiMe(S)]+[Me-MAO]- and [L2TiMe(S)]+[B(C6F5)4]- (S = solvent molecule), formed by activation of L2TiCl2 with MAO or with AlMe3/[CPh3]+[B(C6F5)4]-, and reactions of these ion pairs with ethene to afford chain-propagating species [L2TiP]+[Me-MAO]- and [L2TiP]+[B(C6F5)4]- (P = growing polymeryl chain) have been characterized by 1H, 13C, and 19F NMR spectroscopy.

U2 - 10.1021/om0505920

DO - 10.1021/om0505920

M3 - Article

VL - 24

SP - 5660

EP - 5664

JO - Organometallics

JF - Organometallics

SN - 0276-7333

IS - 23

ER -