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Volume 68 
Part 4 
Page m357  
April 2012  

Received 22 February 2012
Accepted 26 February 2012
Online 3 March 2012

Key indicators
Single-crystal X-ray study
T = 295 K
Mean [sigma](C-C) = 0.006 Å
R = 0.040
wR = 0.104
Data-to-parameter ratio = 17.1
Details
Open access

Bis{N-[(diethylamino)dimethylsilyl]anilinido-[kappa]2N,N'}nickel(II)

aDepartment of Chemistry, Taiyuan Teachers College, Taiyuan 030031, People's Republic of China, and bCollege of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, People's Republic of China
Correspondence e-mail: sdbai@sxu.edu.cn

The mononuclear NiII amide, [Ni(C12H21N2Si)2], has the NiII atom N,N'-chelated by the N-silylated anilinide ligands. The ligands are arranged cis to each other and obey the C2-symmetry operation. The two ends of the N-Si-N chelating unit exhibit different affinities for the metal atom: the Ni-Nanilinide bond length is 1.913 (3) Å and Ni-Namine is 2.187 (3) Å. The four-coordinate NiII ion demonstrates a distorted tetrahedral geometry.

Related literature

For related reviews of metal amides, see: Holm et al. (1996[Holm, R. H., Kenneppohl, P. & Solomon, E. I. (1996). Chem. Rev. 96, 2239-2314.]); Kempe (2000[Kempe, R. (2000). Angew. Chem. Int. Ed. 39, 468-493.]). For the catalytic applications of related N-silylated anilinide group 4 metal compounds towards olefin polymerization, see: Gibson et al. (1998[Gibson, V. C., Kimberley, B. S., White, A. J. P., Williams, D. J. & Howard, P. (1998). Chem. Commun. pp. 313-314.]); Hill & Hitchcock (2002[Hill, M. S. & Hitchcock, P. B. (2002). Organometallics, 21, 3258-3262.]); Yuan et al. (2010[Yuan, S. F., Wei, X. H., Tong, H. B., Zhang, L. P., Liu, D. S. & Sun, W. H. (2010). Organometallics, 29, 2085-2092.]); Zai et al. (2010[Zai, S. B., Liu, F. S., Gao, H. Y., Li, C., Zhou, G. Y., Cheng, S., Guo, L. H., Zhang, L., Zhu, F. M. & Wu, Q. (2010). Chem. Commun. 46, 4321-4323.]). For related organometallic compounds with analogous anilinide ligands, see: Schumann et al. (2000[Schumann, H., Gottfriedsen, J., Dechert, S. & Girgsdies, F. (2000). Z. Anorg. Allg. Chem. 626, 747-758.]); Chen (2008[Chen, J. (2008). Acta Cryst. E64, m938.], 2009[Chen, J. (2009). Acta Cryst. E65, m1307.]).

[Scheme 1]

Experimental

Crystal data
  • [Ni(C12H21N2Si)2]

  • Mr = 501.49

  • Orthorhombic, F d d 2

  • a = 21.2631 (11) Å

  • b = 30.0347 (16) Å

  • c = 8.6228 (5) Å

  • V = 5506.8 (5) Å3

  • Z = 8

  • Mo K[alpha] radiation

  • [mu] = 0.81 mm-1

  • T = 295 K

  • 0.25 × 0.20 × 0.20 mm

Data collection
  • Bruker SMART CCD diffractometer

  • Absorption correction: multi-scan (SADABS; Sheldrick, 1996[Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.]) Tmin = 0.823, Tmax = 0.855

  • 6217 measured reflections

  • 2414 independent reflections

  • 2145 reflections with I > 2[sigma](I)

  • Rint = 0.029

Refinement
  • R[F2 > 2[sigma](F2)] = 0.040

  • wR(F2) = 0.104

  • S = 1.04

  • 2414 reflections

  • 141 parameters

  • 1 restraint

  • H-atom parameters constrained

  • [Delta][rho]max = 0.48 e Å-3

  • [Delta][rho]min = -0.20 e Å-3

  • Absolute structure: Flack (1983[Flack, H. D. (1983). Acta Cryst. A39, 876-881.]), 1038 Friedel pairs

  • Flack parameter: 0.012 (17)

Data collection: SMART (Bruker, 2000[Bruker (2000). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2000[Bruker (2000). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: SHELXTL (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); software used to prepare material for publication: SHELXL97.


Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RK2340 ).


Acknowledgements

This work was performed under the sponsorship of the Natural Science Foundation of China (20702029) and the Natural Science Foundation of Shanxi Province (2008011024).

References

Bruker (2000). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Chen, J. (2008). Acta Cryst. E64, m938.  [CSD] [CrossRef] [details]
Chen, J. (2009). Acta Cryst. E65, m1307.  [CSD] [CrossRef] [details]
Flack, H. D. (1983). Acta Cryst. A39, 876-881.  [CrossRef] [details]
Gibson, V. C., Kimberley, B. S., White, A. J. P., Williams, D. J. & Howard, P. (1998). Chem. Commun. pp. 313-314.  [CrossRef]
Hill, M. S. & Hitchcock, P. B. (2002). Organometallics, 21, 3258-3262.  [CSD] [CrossRef] [ChemPort]
Holm, R. H., Kenneppohl, P. & Solomon, E. I. (1996). Chem. Rev. 96, 2239-2314.  [CrossRef] [PubMed] [ChemPort] [ISI]
Kempe, R. (2000). Angew. Chem. Int. Ed. 39, 468-493.  [CrossRef] [ChemPort]
Schumann, H., Gottfriedsen, J., Dechert, S. & Girgsdies, F. (2000). Z. Anorg. Allg. Chem. 626, 747-758.  [CrossRef] [ChemPort]
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [details]
Yuan, S. F., Wei, X. H., Tong, H. B., Zhang, L. P., Liu, D. S. & Sun, W. H. (2010). Organometallics, 29, 2085-2092.  [CSD] [CrossRef] [ChemPort]
Zai, S. B., Liu, F. S., Gao, H. Y., Li, C., Zhou, G. Y., Cheng, S., Guo, L. H., Zhang, L., Zhu, F. M. & Wu, Q. (2010). Chem. Commun. 46, 4321-4323.  [CSD] [CrossRef] [ChemPort]


Acta Cryst (2012). E68, m357  [ doi:10.1107/S1600536812008550 ]

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