Covalently linked heterobimetallic catalysts for olefin polymerization

Jiaxi Wang; Hongbo Li; Neng Guo; Liting Li; Charlotte L. Stern; Tobin Jay Marks

doi:10.1021/om049481b

Covalently linked heterobimetallic catalysts for olefin polymerization

Jiaxi Wang^*, Hongbo Li, Neng Guo, Liting Li, Charlotte L. Stern, Tobin Jay Marks

^*Corresponding author for this work

Chemistry

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

92 Scopus citations

Abstract

This contribution describes the synthesis and polymerization characteristics of the covalently linked heterobinuclear constrained-geometry polymerization catalyst (μ-CH ₂CH ₂-3,3′) {(η ⁵-indenyl)[1-Me ₂Si( ^tBuN)]-(TiMe ₂)}{(η ⁵-indenyl)[1-Me ₂Si( ^tBuN)](ZrMe ₂)} (Ti ₁Zr ₁). When activated with Ph ₃C ⁺B(C ₆F ₅) ₄ ^-, it is competent to produce long-chain (≥C ₆) branched polyethylenes in ethylene homopolymerization, in sharp contrast to control experiments with mixtures of analogous but mononuclear Zr and Ti CGC catalysts.

Original language	English (US)
Pages (from-to)	5112-5114
Number of pages	3
Journal	Organometallics
Volume	23
Issue number	22
DOIs	https://doi.org/10.1021/om049481b
State	Published - Oct 25 2004

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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title = "Covalently linked heterobimetallic catalysts for olefin polymerization",

abstract = "This contribution describes the synthesis and polymerization characteristics of the covalently linked heterobinuclear constrained-geometry polymerization catalyst (μ-CH 2CH 2-3,3′) {(η 5-indenyl)[1-Me 2Si( tBuN)]-(TiMe 2)}{(η 5-indenyl)[1-Me 2Si( tBuN)](ZrMe 2)} (Ti 1Zr 1). When activated with Ph 3C +B(C 6F 5) 4 -, it is competent to produce long-chain (≥C 6) branched polyethylenes in ethylene homopolymerization, in sharp contrast to control experiments with mixtures of analogous but mononuclear Zr and Ti CGC catalysts.",

author = "Jiaxi Wang and Hongbo Li and Neng Guo and Liting Li and Stern, {Charlotte L.} and Marks, {Tobin Jay}",

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T1 - Covalently linked heterobimetallic catalysts for olefin polymerization

AU - Wang, Jiaxi

AU - Li, Hongbo

AU - Guo, Neng

AU - Li, Liting

AU - Stern, Charlotte L.

AU - Marks, Tobin Jay

PY - 2004/10/25

Y1 - 2004/10/25

N2 - This contribution describes the synthesis and polymerization characteristics of the covalently linked heterobinuclear constrained-geometry polymerization catalyst (μ-CH 2CH 2-3,3′) {(η 5-indenyl)[1-Me 2Si( tBuN)]-(TiMe 2)}{(η 5-indenyl)[1-Me 2Si( tBuN)](ZrMe 2)} (Ti 1Zr 1). When activated with Ph 3C +B(C 6F 5) 4 -, it is competent to produce long-chain (≥C 6) branched polyethylenes in ethylene homopolymerization, in sharp contrast to control experiments with mixtures of analogous but mononuclear Zr and Ti CGC catalysts.

AB - This contribution describes the synthesis and polymerization characteristics of the covalently linked heterobinuclear constrained-geometry polymerization catalyst (μ-CH 2CH 2-3,3′) {(η 5-indenyl)[1-Me 2Si( tBuN)]-(TiMe 2)}{(η 5-indenyl)[1-Me 2Si( tBuN)](ZrMe 2)} (Ti 1Zr 1). When activated with Ph 3C +B(C 6F 5) 4 -, it is competent to produce long-chain (≥C 6) branched polyethylenes in ethylene homopolymerization, in sharp contrast to control experiments with mixtures of analogous but mononuclear Zr and Ti CGC catalysts.

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Covalently linked heterobimetallic catalysts for olefin polymerization

Abstract

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