Received 29 October 2013
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.
For reviews of related metal amides, see: Holm et al. (1996); Kempe (2000). For reviews of amidinates, see: Edelmann (1994); Mohamed (2010). For related organometallic compounds with aminopyridinato ligands, see: Kempe (2003); Smolensky et al. (2005); Talja et al. (2008); Polamo & Leskela (1996).
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: SHELXS97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RK2418 ).
This work was supported by grants from the Natural Science Foundation of China (20702029) and the Natural Science Foundation of Shanxi Province (2008011024).
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