Reactivity of Nickel(II) Diphosphine Complexes towards Alkoxides: a New Route to the Synthesis of Nickel(0) Compounds through Nickel(II) Alkoxides

DOI: 10.1039/DT9940002761

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 2761 - 2764 (1994)

Update date:2022-08-03

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Authors:

Sacco, Adriano

Mastrorilli, Pietro

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Article abstract of DOI:10.1039/DT9940002761

Reaction of with NaOR (R = Me, Et or i-Pr) under a dinitrogen atmosphere afforded , Ni(OR)2 and aldehyde (or acetone when R = Prⁱ) in 1:1:1 ratio, showing the peculiar reducing effect of alkoxide promoted by the chelating property of the phosphorus ligand.The reaction of NaOMe with afforded mainly when carried out in the absence of free diphosphine, and in the presence of free diphosphine.The reaction always yields the nickel(0) species when it is carried out under a carbon monoxide atmosphere.The intermediate formation of unstable alkoxo(diphosphine)nickel(II) complexes has been demonstrated by recording the 31P NMR spectra of the reactiong solutions at low temperature; in the case of the reaction of with NaOMe only, it was possible to isolate as a solid the complex, which has been fully characterized by analytical and spectroscopic (IR and 1H, 31P NMR) methods.A possible route by which nickel(0) complexes could be formed is discussed.

Full text of DOI:10.1039/DT9940002761

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