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Volume 69 
Part 12 
Page m683  
December 2013  

Received 29 October 2013
Accepted 22 November 2013
Online 27 November 2013

Key indicators
Single-crystal X-ray study
T = 295 K
Mean [sigma](C-C) = 0.009 Å
R = 0.073
wR = 0.243
Data-to-parameter ratio = 14.6
Details
Open access

Bis{[mu]4-N-[phen­yl(pyridin-2-yl­aza­nid­yl)meth­yl]pyridin-2-aminido}tetra­kis(tetra­hydro­furan)­tetra­lithium

aDepartment of Chemistry, Taiyuan Teachers College, Taiyuan 030031, People's Republic of China
Correspondence e-mail: chenchenj1128@163.com

The title complex, [Li4(C17H14N4)2(C4H8O)4], bears a novel tetra­dentate di­amido ligand. In the tetra­nuclear centrosymmetric complex mol­ecule, the metal atoms exhibit two kinds of coordination modes. The middle two Li+ cations are coord­inated by four N (ligand) and one O (tetra­hydro­furan, THF) atoms, resulting in a distorted square-pyramidal geometry. The outer two Li+ cations are in distorted tetra­hedral environments consisting of three N (ligand) and one O (THF) atoms. The Li-N bond lengths vary from 2.020 (7) to 2.441 (6)Å.

Related literature

For reviews of related 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 reviews of amidinates, see: Edelmann (1994[Edelmann, F. T. (1994). Coord. Chem. Rev. 137, 403-481.]); Mohamed (2010[Mohamed, A. A. (2010). Coord. Chem. Rev. 254, 1918-1947.]). For related organometallic compounds with amino­pyridinato ligands, see: Kempe (2003[Kempe, R. (2003). Eur. J. Inorg. Chem. pp. 791-803.]); Smolensky et al. (2005[Smolensky, E., Kapon, M., Woollins, J. D. & Eisen, M. S. (2005). Organometallics, 24, 3255-3265.]); Talja et al. (2008[Talja, M., Luhtanen, T., Polamo, M., Klinga, M., Pakkanen, T. & Leskela, M. (2008). Inorg. Chim. Acta, 361, 2195-2202.]); Polamo & Leskela (1996[Polamo, M. & Leskela, M. (1996). J. Chem. Soc. Dalton Trans. pp. 4345-4349.]).

[Scheme 1]

Experimental

Crystal data
  • [Li4(C17H14N4)2(C4H8O)4]

  • Mr = 864.82

  • Triclinic, [P \overline 1]

  • a = 10.3322 (10) Å

  • b = 11.2231 (11) Å

  • c = 12.4813 (12) Å

  • [alpha] = 111.021 (2)°

  • [beta] = 105.355 (2)°

  • [gamma] = 100.763 (2)°

  • V = 1237.3 (2) Å3

  • Z = 1

  • Mo K[alpha] radiation

  • [mu] = 0.07 mm-1

  • T = 295 K

  • 0.20 × 0.15 × 0.15 mm

Data collection
  • Bruker SMART CCD diffractometer

  • Absorption correction: multi-scan (SADABS; Sheldrick, 1996[Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.]) Tmin = 0.986, Tmax = 0.989

  • 6796 measured reflections

  • 4339 independent reflections

  • 2180 reflections with I > 2[sigma](I)

  • Rint = 0.036

Refinement
  • R[F2 > 2[sigma](F2)] = 0.073

  • wR(F2) = 0.243

  • S = 0.93

  • 4339 reflections

  • 298 parameters

  • 61 restraints

  • H-atom parameters constrained

  • [Delta][rho]max = 0.37 e Å-3

  • [Delta][rho]min = -0.24 e Å-3

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: SHELXS97.


Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RK2418 ).


Acknowledgements

This work was supported by grants from 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.
Edelmann, F. T. (1994). Coord. Chem. Rev. 137, 403-481.  [CrossRef] [Web of Science]
Holm, R. H., Kenneppohl, P. & Solomon, E. I. (1996). Chem. Rev. 96, 2239-2314.  [CrossRef] [PubMed] [ChemPort] [Web of Science]
Kempe, R. (2000). Angew. Chem. Int. Ed. 39, 468-493.  [CrossRef] [ChemPort]
Kempe, R. (2003). Eur. J. Inorg. Chem. pp. 791-803.  [CrossRef]
Mohamed, A. A. (2010). Coord. Chem. Rev. 254, 1918-1947.  [Web of Science] [CrossRef] [ChemPort]
Polamo, M. & Leskela, M. (1996). J. Chem. Soc. Dalton Trans. pp. 4345-4349.  [CSD] [CrossRef]
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [ChemPort] [IUCr Journals]
Smolensky, E., Kapon, M., Woollins, J. D. & Eisen, M. S. (2005). Organometallics, 24, 3255-3265.  [CSD] [CrossRef] [ChemPort]
Talja, M., Luhtanen, T., Polamo, M., Klinga, M., Pakkanen, T. & Leskela, M. (2008). Inorg. Chim. Acta, 361, 2195-2202.  [Web of Science] [CSD] [CrossRef] [ChemPort]


Acta Cryst (2013). E69, m683  [ doi:10.1107/S1600536813031838 ]

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