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- W2026868800 abstract "A general synthetic route for the preparation of 2-anilinoperinaphthenones is reported. 2-(2,6-Dimethylanilino)perinaphthenone (4a) and 2-(2,6-diisopropylanilino)perinaphthenone (4b) are used as ligands for the corresponding neutral nickel(II) complexes [[(2,6-Me2C6H3)NC13H7O]Ni(Ph)(PPh3)] (5a) and [[(2,6-iPr2C6H3)NC13H7O]Ni(Ph)(PPh3)] (5b). The key features of these nickel complexes are a hindered N-aryl ring, a five-membered-ring nickel chelate, and an anionic N-donor moiety. Complexes 5a,b are active, but short-lived, ethylene polymerization catalysts with turnover numbers in excess of 60 000 mol ethylene/mol catalyst. Polymer branching is controlled by variation of temperature and pressure. A correlation between ethylene pressure and polymer molecular weight suggests that chain transfer occurs by a β-hydride elimination pathway. Finally, decomposition of 5b to free ligand is observed under the polymerization conditions employed." @default.
- W2026868800 created "2016-06-24" @default.
- W2026868800 creator A5028020522 @default.
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- W2026868800 date "2002-12-13" @default.
- W2026868800 modified "2023-10-03" @default.
- W2026868800 title "A Highly Active Anilinoperinaphthenone-Based Neutral Nickel(II) Catalyst for Ethylene Polymerization" @default.
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- W2026868800 doi "https://doi.org/10.1021/om020648f" @default.
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