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

Abstract

In the title compound, [Li2(C6H3N2O4)2(NO3)]n, the two symmetry-independent LiI ions are each in a trigonal–bipyramidal coordination and are bridged by N,O-bonding ligands, forming mol­ecular ribbons propagating in [010]. Each LiI 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.

catena-Poly[[aqualithium(I)]-μ-3-carboxy-5,6-dimethylpyrazine-2-carboxylato-κ4O2,N1:O3,N4]

“…In all of them, Li coordination is trigonal bipyramidal (Tombul et al, 2008), (Tombul & Güven, 2009), (Starosta & Leciejewicz, 2011), (Starosta & Leciejewicz, 2013).…”