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catena-Poly[[bis(mu-2,6-dimethylpiperidin-ido-N:N)dilithium]-mu-(N,N,N ',N '-tetra- methylethylenediamine-N : N'')]

Clegg, W and Horsburgh, L. and Couper, S.A. and Mulvey, Robert (1999) catena-Poly[[bis(mu-2,6-dimethylpiperidin-ido-N:N)dilithium]-mu-(N,N,N ',N '-tetra- methylethylenediamine-N : N'')]. Acta Crystallographica Section C: Crystal Structure Communications, 55 (6). pp. 867-869. ISSN 0108-2701

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The title compound, [Li-2(C7H14N)(2)(C6H16N2)](n), is a chain polymer in which strictly planar Li2N2 rings incorporating 2,6-dimethylpiperidinido ligands are linked by N,N,N',N'-tetramethylethylenediamine ligands in a rare bridging role. The Li atom is planar three-coordinate. The internal ring angles are obtuse [107.89(11)degrees] at lithium and acute [72.11(11)degrees] at nitrogen, as is commonly found for lithium amide ring structures.