Synthesis, structure, and ethylene polymerization behavior of nickel complexes based on benzoylmethylenetri(2-alkoxylphenyl)phosphorane

Da Wei Wan, Yanshan Gao, Jun Fang Li, Qi Shen, Xiu Li Sun*, Yong Tang

*Corresponding author for this work

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Several new nickel complexes are prepared by the treatment of the stabilized ylide benzoylmethylenetri(2-alkoxylphenyl)phosphorane with Ni(cod) 2 in the presence of PPh 3 . X-Ray diffraction studies reveal that a distorted square planar geometry around Ni(ii) is adopted. Upon treatment with Ni(cod) 2 , the nickel complexes are sufficiently robust for ethylene polymerization. The existence of 2-alkoxyl-aryl substituents on phosphorus improves the catalytic activities. The highest activity (2.1 × 10 6 g mol -1 h -1 ) is achieved when tri(2-isopropoxy-phenyl)phosphorane is employed (5e), which is one order higher than the corresponding SHOP catalyst. NMR analysis shows that the polyethylene mainly contains terminal double bonds and is highly linear.

Original languageEnglish (US)
Pages (from-to)4552-4557
Number of pages6
JournalDalton Transactions
Volume41
Issue number15
DOIs
StatePublished - Apr 21 2012

ASJC Scopus subject areas

  • Inorganic Chemistry

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