Synthesis and Ethylene Polymerization Activity of a Novel, Highly Active Single-Component Binuclear Neutral Nickel(II) Catalyst

The novel binuclear neutral nickel(II) complex [((2,6-iPr2C6H3)NCH)C6H3ONi(PPh3)Ph]2 (5), based on the 3,3‘-bisalicylaldimine ligand, has been synthesized in high yield, and its structure has been confirmed by X-ray crystallography, elemental analysis, and 1H NMR and 13C NMR spectra. Used in the pol...

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Bibliographic Details
Published in:Organometallics 2005-05, Vol.24 (11), p.2628-2632
Main Authors: Hu, Tao, Tang, Li-Ming, Li, Xiao-Fang, Li, Yue-Sheng, Hu, Ning-Hai
Format: Article
Language:English
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Summary:The novel binuclear neutral nickel(II) complex [((2,6-iPr2C6H3)NCH)C6H3ONi(PPh3)Ph]2 (5), based on the 3,3‘-bisalicylaldimine ligand, has been synthesized in high yield, and its structure has been confirmed by X-ray crystallography, elemental analysis, and 1H NMR and 13C NMR spectra. Used in the polymerization of ethylene as an active single-component catalyst, the complex exhibited a high catalytic activity of up to 4.55 × 105 g of PE/((mol of Ni) h), and polyethylenes with a weight-average molecular weight (M̄ w) of up to 487.7 kg/mol and relatively broad molecular weight distribution (M̄ w/M̄ n = 2.8−3.8) were produced.
ISSN:0276-7333
1520-6041
DOI:10.1021/om049223e