2‐Phosphanylphenolate Nickel Catalysts for the Polymerization of Ethylene | Zendy

Heinicke Joachim | Zendy; Köhler Martin | Zendy; Peulecke Normen | Zendy; He Mengzhen | Zendy; Kindermann Markus K. | Zendy; Keim Wilhelm | Zendy; Fink Gerhard | Zendy

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2‐Phosphanylphenolate Nickel Catalysts for the Polymerization of Ethylene

Author(s) -

Heinicke Joachim,

Köhler Martin,

Peulecke Normen,

He Mengzhen,

Kindermann Markus K.,

Keim Wilhelm,

Fink Gerhard

Publication year - 2003

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.200304888

Subject(s) - catalysis , branching (polymer chemistry) , ethylene , chemistry , polymer chemistry , pyridine , polymerization , polyethylene , tetrahydrothiophene , nickel , alkyl , solvent , polymer , medicinal chemistry , organic chemistry

The previously unknown methallylnickel 2‐diorganophosphanylphenolates (RPh, c Hex) were synthesized and found to catalyze the polymerization of ethylene. To explore the potential for ligand‐tuning, a variety of P‐alkyl‐ and P‐phenyl‐2‐phosphanylphenols was synthesized and allowed to react with [Ni(cod) 2 ] (cod=1,5‐cyclooctadiene) or with NiBr 2 ⋅DME and NaH. The complexes formed in situ with [Ni(cod) 2 ] are generally active as ethylene polymerization catalysts with all the ligands tested, whereas the latter systems are inactive when 2‐dialkylphosphanylphenols are applied. M w values, ranging from about 1000 to about 100 000 g mol −1 , increase for various R 2 P groups in the order RPh

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