Date Published: July 01, 2011
Publisher: International Union of Crystallography
Author(s): Wojciech Starosta, Janusz Leciejewicz.
The asymmetric unit of the title compound, [Li3(C6H5N2O2)2(NO3)(H2O)2]n contains three LiI ions, two ligand anions, two water molecules and a nitrate anion. Related by a centre of inversion, they form a centrosymmetric molecular cluster in which one of the LiI ions shows trigonal–bipyramidal and the other two distorted tetrahedral coordination. LiI ions are bridged by water O atoms and carboxylate O atoms donated by one of the ligands. The clusters, bridged by two nitrato O atoms, form molecular columns along , which are held together by O—H⋯O and O—H⋯N hydrogen bonds and π–π interactions [centroid–centroid distances = 3.694 (1) and 3.796 (1) Å].
For the structure of a lithium complex with 3-aminopyrazine-2-carboxylate and aqua ligands, see: Starosta & Leciejewicz (2010 ▶). The structures of two complexes with pyridazine carboxylate ligands have been also determined, see: Starosta & Leciejewicz (2011a ▶,b ▶). For the structure of a LiI complex with pyrimidine carboxylate and nitrate ligands, see: Starosta & Leciejewicz (2011c ▶).