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- W2033326208 abstract "[25136-46-3] C54H45NiP3 (MW 845.59) InChI = 1S/3C18H15P.Ni/c3*1-4-10-16(11-5-1)19(17-12-6-2-7-13-17)18-14-8-3-9-15-18;/h3*1-15H; InChIKey = VGZIOHINNQGTOU-UHFFFAOYSA-N (a source of nickel(0) useful for the coupling of aryl, alkenyl, and allyl halides;2 oligomerization of strained alkenes;3 oligomerization of allenes4) Physical Data: mp 124–126 °C (N2). Solubility: sol toluene, benzene, DMF, DMA, Et2O, THF, HMPA. Analysis of Reagent Purity: 1H NMR δ 7.37 (o-H), 6.96 (m- and p-H).5 Preparative Methods: the standard preparation involves the reduction of Nickel(II) Chloride with Zinc dust in the presence of Triphenylphosphine. Anhydrous NiCl2 (2.6 g) was refluxed with 21 g of PPh3 in 300 mL of acetonitrile for 1 h. After cooling to rt, 2.0 g of zinc dust was added and the mixture was stirred under nitrogen overnight. After removal of solvent, the resulting red solid was dissolved in the minimum volume of hot toluene (60 °C), removed from insoluble impurities by hot filtration, precipitated by the addition of hexane, and dried under vacuum to give a reddish-brown powder.5 This precipitation has also been carried out in situ from the same starting materials and is currently the favored procedure.2 Several other methods of preparation have been described.6 Handling, Storage, and Precautions: highly oxygen sensitive; special inert-atmosphere techniques must be used.7 Should be stored at 0 °C." @default.
- W2033326208 created "2016-06-24" @default.
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- W2033326208 date "2001-04-15" @default.
- W2033326208 modified "2023-09-25" @default.
- W2033326208 title "Tris(triphenylphosphine)nickel(0)" @default.
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