Two-coordinate d9 complexes. synthesis and oxidation of NHC nickel(I) amides.

Abstract

Reaction of the d9-d9 Ni(I) monochloride dimer, [(IPr)Ni(mu-Cl)]2 (1), with NaN(SiMe3)2 and LiNHAr (Ar = 2,6-diisopropylphenyl) gives the novel monomeric, 2-coordinate Ni(I) complexes (IPr)Ni{N(SiMe3)2} (2) and (IPr)Ni(NHAr) (3). Reaction of 2 with Cp2Fe+ results in its 1-e- oxidation followed by beta-Me elimination to give a base-stabilized iminosilane complex [(IPr)Ni(CH3){kappa1-N(SiMe3)=SiMe2.Et2O}][BArF4] (6). Oxidation of 3 gives [(IPr)Ni(eta3-NHAr)(THF)][BArF4] (4), which upon loss of THF affords dimeric [(IPr)Ni(N,eta3:NHC6iPr2H3)]2[BArF4]2 (5).

DOI: 10.1021/ja805804s

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Cite this paper

@article{Laskowski2008TwocoordinateDC, title={Two-coordinate d9 complexes. synthesis and oxidation of NHC nickel(I) amides.}, author={Carl A Laskowski and Gregory L Hillhouse}, journal={Journal of the American Chemical Society}, year={2008}, volume={130 42}, pages={13846-7} }