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In the title compound, [Li 2 (C 6 H 3 N 2 O 4 ) 2 (NO 3 )]  n  , the two symmetry-independent Li I  ions are each in a trigonal–bipyramidal coordination and are bridged by  N , O -bonding ligands, forming mol­ecular ribbons propagating in [010]. Each Li I  ion is also coordinated by two O atoms from nitrate ions, connecting the ribbons into a three-dimensional network. Very strong intra­molecular O—H⋯O hydrogen bonds occur between the carboxyl and the carboxylate group.

Poly[(μ4-3-carboxypyrazine-2-carboxylato)(μ4-nitrato)dilithium]

Poly[(μ₄-3-carboxypyrazine-2-carboxylato)(μ₄-nitrato)dilithium]