Poly[diaqua(μ2-oxalato-κ4O1,O2:O1′,O2′)(μ2-pyrazine-2-carboxylato-κ4N1,O:O,O′)neodymium(III)]

Abstract

In the title complex, [Nd(C5H3N2O2)(C2O4)(H2O)2]n, the NdIII atom is ten-coordinated by one N atom and three O atoms from two pyrazine-2-carboxylate ligands, four O atoms from two oxalate ligands and two water molecules in a distorted bicapped square-antiprismatic geometry. The two crystallographically independent oxalate ligands, each lying on an inversion center, act as bridging ligands, linking Nd atoms into an extended zigzag chain. Neighboring chains are linked by the pyrazine-2-carboxylate ligands into a two-dimensional layerlike network in the (10overline{1}) plane. The layers are further connected by O—H...O and O—H...N hydrogen bonds, forming a three-dimensional supramolecular network.