Di-mu-aqua-bis[aqua(5-carboxylato-1H-1,2,3-triazole-4-carboxylic acid-kappa N-2(3),O-4)lithium]

The crystal structure of the title compound, [Li-2(C4H2N3O4)(2)(H2O)(4)], contains centrosymmetric dinuclear molecules in which two Li I ions are bridged by two water O atoms. The metal ion is coordinated by one N, O-bidentate ligand and three water O atoms (one of them is symmetry generated), with one of the bridging water O atoms in the apical position of a distorted square pyramid. The carboxylate group that participates in coordination to the metal ion remains protonated; the other is deprotonated and coordination inactive. An intramolecular O-H center dot center dot center dot O hydrogen bond between carboxylate groups is observed. In the crystal, dimers are linked by O-H center dot center dot center dot O, O-H center dot center dot center dot N and N-H center dot center dot center dot O hydrogen bonds, generating a three-dimensional network.