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Oligomerization and Polymerization of Olefins with Iron and Cobalt Catalysts Containing 2,6-Bis(imino)pyridine and Related Ligands

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Book cover Olefin Upgrading Catalysis by Nitrogen-based Metal Complexes II

Part of the book series: Catalysis by Metal Complexes ((CMCO,volume 36))

Abstract

The key advances in oligo- or polymerization of olefins catalyzed by the 2,6-bis(imino)pyridine-based iron and cobalt complexes were presented. Particular attention was paid to trace the structural evolution of the 2,6-bis(imino)pyridine and related ligands, recent understandings of the relationship between catalyst structure and catalytic activity, and applications of iron and cobalt catalysts in oligo- or polymerization of olefins. Additionally, the mechanistic aspects of the oligo- or polymerization reactions, involving catalyst activation, oligo- or polymerization initiation, chain propagation and chain transfer, activators or cocatalysts, monomers and comonomers, and immobilization of iron and cobalt catalysts, have also been reviewed and discussed.

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Abbreviations

AIBN:

Azobis-iso-butyronitrile

ATRP:

Atom transfer radical polymerization

BIP:

2,6-Bis(imino)pyridine

BTCA:

Benzene-1,3,5-tricarboxylic acid

Bz:

Benzyl

13C NMR:

Carbon-13 nuclear magnetic resonance spectroscopy

CGC:

Constrained geometry catalysts

CRYSTAF:

Crystallization analysis fractionation

DFT:

Density functional theory

DSC:

Differential scanning calorimetry

EPR:

Electron paramagnetic resonance spectroscopy

ESI-MS:

Electrospray ionization mass spectrometry

EVE:

Ethyl vinyl ether

GPC/SEC:

Gel permeation chromatography/size-exclusion chromatography

1H NMR:

Proton nuclear magnetic resonance spectroscopy

i-BVE:

iso-Butyl vinyl ether

LDA:

Lithium diisopropylamide

LLDPE:

Linear low-density polyethylene

MA:

Methyl acrylate

MAO:

Methylaluminoxane

MM:

Molecular mechanics

MMA:

Methyl methacrylate

MMAO:

Modified methylaluminoxane

Mn :

Number-average molecular weight

Mw :

Weight-average molecular weight

Mw/Mn :

Polydispersity index

n-BMA:

n-Butyl methacrylate

n-BVE:

n-Butyl vinyl ether

NMR:

Nuclear magnetic resonance spectroscopy

OTf:

Triflate group (trifluoromethanesulfonate, CF3SO3 ?)

OTs:

Tosylate group (p-toluenesulfonate, p-CH3C6H4SO3 ?)

PE:

Polyethylene

PES:

Potential energy surface

PMAO:

Polymeric methylaluminoxane

PP:

Polypropylene

PS:

Polystyrene

QM:

Quantum mechanics

SAXS:

Small-angle X-ray scattering

SGEF:

Solvent gradient elution fractionation

SHOP:

Shell higher olefin process

t-BA:

tert-Butyl acrylate

t-BMA:

tert-Butyl methacrylate

TEAO:

Tetraethylaluminoxane

WAXD:

Wide-angle X-ray diffraction

XPS:

X-ray photoelectron spectroscopy

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Acknowledgment

We thank the Fundação para Ciência e Tecnologia for financial support (Projects PPCDT/QUI/59025/2004, PTDC/QUI/65474/2006 and PTDC/EQU-EQU/110313/2009, co-financed by FEDER) and a postdoctoral fellowship to L.L. (SFRH/BPD/30733/2006).

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Li, L., Gomes, P.T. (2011). Oligomerization and Polymerization of Olefins with Iron and Cobalt Catalysts Containing 2,6-Bis(imino)pyridine and Related Ligands. In: CAMPORA, J., GIAMBASTIANI, G. (eds) Olefin Upgrading Catalysis by Nitrogen-based Metal Complexes II. Catalysis by Metal Complexes, vol 36. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0696-5_3

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