Bis{μ₄-N-[phen­yl(pyridin-2-yl­aza­nid­yl)meth­yl]pyridin-2-aminido}tetra­kis(tetra­hydro­furan)­tetra­lithium

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.