Iron(II) and cobalt(II) tris(2-pyridyl)phosphine and tris(2-pyridyl)amine catalysts for the ethylene polymerization

Karam, Arquı́medes; Tenía, Rita; Martínez, M. C. Román; López-Linares, Francisco; Albano, Carmen; Díaz-Barrios, Antonio; Sánchez, Yudania; Catarı́, Edgar; Casas, Emilio; Pékerar, Sara; Albornoz, Alberto

doi:10.1016/j.molcata.2006.09.048

Cited by 25 publications

(7 citation statements)

References 26 publications

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“…bearing tris(2-pyridyl)phosphine and tris(2-pyridyl)amine ligands (Scheme 26). 78 Such catalysts exhibited relatively high activities (range = 32-271gPE mmol -1 h -1 bar -1 ) for ethylene polymerization. 79 The polymerization temperature had an impact on the activity of the systems bearing either ligand set.…”

Section: Pyridine Type Ligationmentioning

confidence: 99%

“…The polyethylene obtained was linear HDPE with a broad mono-modal distribution. 78 Our group has systematically studied the ethylene polymerization and oligomerization characteristic of a number of N,N, N-tridentate pyridyl iron(II) and cobalt(II) catalysts with different ligand frameworks (Scheme 27). 20,50,[80][81][82][83][84][85] The iron pre-catalyst 158 exhibited high activity for ethylene oligomerization in the presence of MAO with butene as the major product at atmospheric pressure.…”

Section: Pyridine Type Ligationmentioning

confidence: 99%

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Bi- and tri-dentate imino-based iron and cobalt pre-catalysts for ethylene oligo-/polymerization

Feng

Wang

et al. 2014

Inorg. Chem. Front.

121

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Recent progress on the use of iron and cobalt complex precatalysts for ethylene reactivity is reviewed. The review is organized in terms of the denticity of the chelate ligands 10 employed, with particular reference to the influence of the ligand frameworks and their substituents on the catalytic performance for ethylene oligomerization/polymerization catalysis. The majority of the systems bear tri-dentate ligation at the iron/cobalt centre, though it is clear that bi-dentate 15 iron/cobalt complex pre-catalysts have also attracted significant attention. Such systems produce in most cases highly linear products ranging from oligomeric α-olefins to high molecular weight polyethylene, and as such are promising candidates for both academic and industrial 20 considerations.

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Section: Pyridine Type Ligationmentioning

confidence: 99%

Section: Pyridine Type Ligationmentioning

confidence: 99%

Bi- and tri-dentate imino-based iron and cobalt pre-catalysts for ethylene oligo-/polymerization

Feng

Wang

et al. 2014

Inorg. Chem. Front.

121

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“…While the 2,6-bis(imino)pyridine ligand frame has continued to lead the way, the past 10 years has also seen the development of alternative ligand sets that can act as compatible supports for iron and cobalt ethylene oligomerisation/polymerisation catalysts ( Table 4 ) [46,50,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209] ; active catalysts based on bimetallic iron and cobalt precatalysts have also started to emerge ( Table 5 ) [54,210,211,212,213,214,215] . In the main, these systems show lower activities than the prototype bis(imino)pyridine-based catalysts, although several of these systems have significantly started to approach their catalytic performances (e.g.…”

Section: Alternative Iron and Cobalt Catalystsmentioning

confidence: 99%

Iron-Based and Cobalt-Based Olefin Polymerisation Catalysts

Gibson¹,

Solan²

2008

Topics in Organometallic Chemistry

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This chapter describes the brief history of iron or cobalt catalysts for olefin polymerisation and oligomerisation. Since the discovery in 1998 that 2,6-bis(imino)pyridine iron and cobalt halides, on activation with MAO, can convert ethylene to highly linear polyethylene, numerous reports have been concerned with ligand modification, mechanisms for precatalyst activation, identifying the active species and understanding the mode of propagation/chain transfer. In addition, heterogenisation of this class of catalysts, their incorporation into macrocycles/ polymers and their use in reactor blending/tandem catalysis has seen some important developments; alternative ligand architectures that can support active iron and cobalt catalysts are also discussed as are different types of olefinic monomer.

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“…Yang et al [10] described a bidentate, blue luminescent complex of tris(2-pyridyl)amine with zinc(II) in tetrahydrofuran and solid state. Copper(I) complex was effectively applied as a catalyst in carbene and nitrene transfer reactions [11], whereas complexes with iron(II) and cobalt(II) were used in catalytic ethylene polymerization [12].…”

Section: Introductionmentioning

confidence: 99%

Ion recognition properties of new pyridine-2,6-dicarboxamide bearing propeller-like pendant residues: multi-spectroscopic approach

et al. 2020

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The synthesis and ion binding properties of new amide derived from propeller-like tris(2-pyridyl)amine and 2,6-pyridinedicarboxylic acid chloride were described. Amide binds divalent metal cations: copper(II), nickel(II), zinc(II), and lead(II) in acetonitrile. In acetonitrile:water mixture (9:1 v/v) amide interacts only with copper(II) and nickel(II) cations forming complexes of 1:1 stoichiometry. It was found that the introduction of bulky, nitrogen donor atom bearing pendant groups can influence coordination mode of pyridine-2,6-dicarboxamides. The probable model of ligand-ion interactions is proposed on the basis of 1 H NMR and FT-IR spectroscopy.

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Iron(II) and cobalt(II) tris(2-pyridyl)phosphine and tris(2-pyridyl)amine catalysts for the ethylene polymerization

Cited by 25 publications

References 26 publications

Bi- and tri-dentate imino-based iron and cobalt pre-catalysts for ethylene oligo-/polymerization

Bi- and tri-dentate imino-based iron and cobalt pre-catalysts for ethylene oligo-/polymerization

Iron-Based and Cobalt-Based Olefin Polymerisation Catalysts

Ion recognition properties of new pyridine-2,6-dicarboxamide bearing propeller-like pendant residues: multi-spectroscopic approach

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