Poly[diaqua-μ-oxalato-μ-pyrazine-2-carbox­yl­ato-lanthanum(III)]

In the title complex, [La(C(5)H(3)N(2)O(2))(C(2)O(4))(H(2)O)(2)](n), the La(III) ion is coordinated by one N and three O atoms from two pyrazine-2-carboxylate ligands, by four O atoms from two oxalate ligands and by two O atoms of two water molecules, displaying a distorted bicapped square-anti­prismatic geometry. The carboxyl­ate groups of pyrazine-2-carboxyl­ate and oxalate ligands link the lanthanum metal centres, forming layers parallel to (10[Image: see text]). The layers are further connected by inter­molecular O—H⋯O and N—H⋯O hydrogen-bonding inter­actions, forming a three-dimensional supra­molecular network.