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Issue 36, 2017
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NI(II) phosphine and phosphide complexes supported by a PNP-pyrrole pincer ligand

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Abstract

The reaction between [(PNpyrP)NiCl] (1, PNpyrP = 2,5-bis((di-iso-propylphosphino)-methyl)-1H-pyrrolide) and TlPF6 in the presence of a monodentate phosphine ligand led to cationic nickel phosphine and phosphite complexes, [(PNpyrP)Ni(PHPh2)][PF6] (2), [(PNpyrP)Ni(PMe3)][PF6] (3), and [(PNpyrP)Ni{P(OMe)3}][PF6] (4). Compound 2 can be deprotonated resulting in the generation of a terminal phosphido complex, [(PNpyrP)Ni(PPh2)] (5). When 3 is subjected to a base, a methyl proton of PMe3 is abstracted to afford [(PNpyrP)Ni(CH2PMe2)] (6), containing a methylene bridge between Ni and the external phosphine. Compounds 2–6 were characterized by single crystal X-ray diffraction in addition to multi-nuclear NMR spectroscopy and elemental analysis.

Graphical abstract: NI(ii) phosphine and phosphide complexes supported by a PNP-pyrrole pincer ligand

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Publication details

The article was received on 30 Jul 2017, accepted on 28 Aug 2017 and first published on 29 Aug 2017


Article type: Paper
DOI: 10.1039/C7DT02784B
Citation: Dalton Trans., 2017,46, 12125-12131
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    NI(II) phosphine and phosphide complexes supported by a PNP-pyrrole pincer ligand

    J. A. Kessler and V. M. Iluc, Dalton Trans., 2017, 46, 12125
    DOI: 10.1039/C7DT02784B

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