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. 2012 Oct 1;68(Pt 10):m1282-3.
doi: 10.1107/S1600536812039207. Epub 2012 Sep 19.

{2,6-Bis[(2,6-diisopropyl-phosphan-yl)-oxy]-4-fluoro-phenyl-κ(3)P,C(1),P'}(1H-pyrazole-κN(2))nickel(II) hexa-fluoro-phosphate

Man-Lung Kwan  1 , Sara J Conry, Charles S Carfagna, Loren P Press, Oleg V Ozerov, Norris W Hoffman, Richard E Sykora
Affiliations

{2,6-Bis[(2,6-diisopropyl-phosphan-yl)-oxy]-4-fluoro-phenyl-κ(3)P,C(1),P'}(1H-pyrazole-κN(2))nickel(II) hexa-fluoro-phosphate

Man-Lung Kwan et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

The title compound, [Ni(C(18)H(30)FO(2)P(2))(C(3)H(4)N(2))]PF(6), was prepared by halide abstraction with TlPF(6) in the presence of CH(3)CN in CDCl(3) from the respective neutral pincer chlorido analogue followed by addition of pyrazole. The PO-C-OP pincer ligand acts in typical trans-P(2) tridentate fashion to generate a distorted square-planar nickel structure. The Ni-N(pyrazole) distance is 1.925 (2) Å and the plane of the pyrazole ligand is rotated 56.2 (1)° relative to the approximate square plane surrounding the Ni(II) center in which the pyrazole is bound to the Ni(II) atom through its sp(2)-hybridized N atom. This Ni-N distance is similar to bond lengths in the other reported Ni(II) pincer-ligand square-planar pyrazole complex structures; however, its dihedral angle is significantly larger than any of those for the latter set of pyrazole complexes.

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Figures

Fig. 1.
Fig. 1.
A thermal ellipsoid plot (50%) of the title compound showing the labeling scheme.
Fig. 2.
Fig. 2.
1H NMR spectrum of the title compound at 23 °C.
Fig. 3.
Fig. 3.
13C NMR spectrum of the title compound at 23 °C.
See this image and copyright information in PMC

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