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1561938 
Journal Article 
Bis[[(6-carb-oxy-pyridazine-3-carboxyl-ato-κN,O)lithium]-μ-penta-hydrogen-dioxy-gen(1+)] 
Starosta, W; Leciejewicz, J 
2010 
Yes 
Acta Crystallographica. Section E: Structure Reports Online
ISSN: 1600-5368 
66 
Pt 11 
m1362-m1363 
English 
21588805 
The structure of the title compound, [Li(C(6)H(3)N(2)O(4))(2)(H(5)O(2))], is composed of centrosymmetric monomers in which an Li(I) ion is chelated by two N,O-bonding groups donated by two ligands. The Li(I) ion and both ligand mol-ecules are coplanar [r.m.s. deviation 0.0047 (2) Å] and water O atoms are in the axial positions. The second carboxyl group of each ligand remains protonated. An additional H atom, located between adjacent coordinated water mol-ecules and observed on Fourier maps, maintains the charge balance within the monomers and bridges them by short symmetric hydrogen bonds of 2.518 (3) Å to form catenated ribbons. The monomers also inter-act via hydrogen bonds in which water and carboxyl O atoms act as donors.