Received 22 February 2012
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.
For related reviews of metal amides, see: Holm et al. (1996); Kempe (2000). For the catalytic applications of related N-silylated anilinide group 4 metal compounds towards olefin polymerization, see: Gibson et al. (1998); Hill & Hitchcock (2002); Yuan et al. (2010); Zai et al. (2010). For related organometallic compounds with analogous anilinide ligands, see: Schumann et al. (2000); Chen (2008, 2009).
Data collection: SMART (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RK2340 ).
This work was performed under the sponsorship of the Natural Science Foundation of China (20702029) and the Natural Science Foundation of Shanxi Province (2008011024).
Bruker (2000). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Chen, J. (2008). Acta Cryst. E64, m938.
Chen, J. (2009). Acta Cryst. E65, m1307.
Flack, H. D. (1983). Acta Cryst. A39, 876-881.
Gibson, V. C., Kimberley, B. S., White, A. J. P., Williams, D. J. & Howard, P. (1998). Chem. Commun. pp. 313-314.
Hill, M. S. & Hitchcock, P. B. (2002). Organometallics, 21, 3258-3262.
Holm, R. H., Kenneppohl, P. & Solomon, E. I. (1996). Chem. Rev. 96, 2239-2314.
Kempe, R. (2000). Angew. Chem. Int. Ed. 39, 468-493.
Schumann, H., Gottfriedsen, J., Dechert, S. & Girgsdies, F. (2000). Z. Anorg. Allg. Chem. 626, 747-758.
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Yuan, S. F., Wei, X. H., Tong, H. B., Zhang, L. P., Liu, D. S. & Sun, W. H. (2010). Organometallics, 29, 2085-2092.
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.