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Active intermediates in ethylene polymerization over titanium bis(phenoxyimine) catalysts

Active intermediates in ethylene polymerization over titanium bis(phenoxyimine) catalysts

Type of Publication: Journal article
Author: Bryliakov, Konstantin P.; Kravtsov, Evgenii A.; Pennington, Dale A.; Lancaster, Simon J.; Bochmann, Manfred; Brintzinger, Hans-Herbert; Talsi, Evgenii P.
Year of publication: 2005
Published in: Organometallics ; 24 (2005), 23. - pp. 5660-5664. - ISSN 0276-7333. - eISSN 1520-6041
DOI (citable link): https://dx.doi.org/10.1021/om0505920
Summary:
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.
Subject (DDC): 540 Chemistry

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BRYLIAKOV, Konstantin P., Evgenii A. KRAVTSOV, Dale A. PENNINGTON, Simon J. LANCASTER, Manfred BOCHMANN, Hans-Herbert BRINTZINGER, Evgenii P. TALSI, 2005. Active intermediates in ethylene polymerization over titanium bis(phenoxyimine) catalysts. In: Organometallics. 24(23), pp. 5660-5664. ISSN 0276-7333. eISSN 1520-6041. Available under: doi: 10.1021/om0505920

@article{Bryliakov2005Activ-23694, title={Active intermediates in ethylene polymerization over titanium bis(phenoxyimine) catalysts}, year={2005}, doi={10.1021/om0505920}, number={23}, volume={24}, issn={0276-7333}, journal={Organometallics}, pages={5660--5664}, author={Bryliakov, Konstantin P. and Kravtsov, Evgenii A. and Pennington, Dale A. and Lancaster, Simon J. and Bochmann, Manfred and Brintzinger, Hans-Herbert and Talsi, Evgenii P.} }

Pennington, Dale A. Organometallics ; 24 (2005), 23. - S. 5660-5664 2005 Talsi, Evgenii P. Active intermediates in ethylene polymerization over titanium bis(phenoxyimine) catalysts Lancaster, Simon J. 2013-06-20T14:52:15Z Bochmann, Manfred Bryliakov, Konstantin P. Lancaster, Simon J. Brintzinger, Hans-Herbert terms-of-use Kravtsov, Evgenii A. eng 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 (L<sub>2</sub>TiCl<sub>2</sub>) have been studied. Outer sphere ion pairs [L<sub>2</sub>TiMe(S)]<sup>+</sup>[Me-MAO]<sup>-</sup> and [L<sub>2</sub>TiMe(S)]<sup>+</sup>[B(C<sub>6</sub>F<sub>5</sub>)<sub>4</sub>]- (S = solvent molecule), formed by activation of L<sub>2</sub>TiCl2 with MAO or with AlMe<sub>3</sub>/[CPh<sub>3</sub>]<sup>+</sup>[B(C<sub>6</sub>F<sub>5</sub>)<sub>4</sub>]-, and reactions of these ion pairs with ethene to afford chain-propagating species [L<sub>2</sub>TiP]<sup>+</sup>[Me-MAO]- and [L<sub>2</sub>TiP]<sup>+</sup>[B(C<sub>6</sub>F<sub>5</sub>)<sub>4</sub>]<sup>-</sup> (P = growing polymeryl chain) have been characterized by <sup>1</sup>H, <sup>13</sup>C, and <sup>19</sup>F NMR spectroscopy. 2013-06-20T14:52:15Z Brintzinger, Hans-Herbert Bochmann, Manfred Bryliakov, Konstantin P. Talsi, Evgenii P. Kravtsov, Evgenii A. Pennington, Dale A.

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