catena-Poly[[[tetraaquaneodymium(III)]-di-μ-isonicotinato] chloride]

In the title complex, {[Nd(C6H4NO2)2(H2O)4]Cl}n, the NdIII cation is located on a twofold rotation axis and coordinated by four isonicotiniate anions and four water molecules in a distorted square-antiprismatic geometry. The carboxylate groups of the isonicotinate anions bridge the NdIII cations, forming polymeric chains running along the c axis. The Cl anion is located on a twofold rotation axis and is linked to the polymeric chains via O—H...Cl hydrogen bonding. Intermolecular O—H...O and O—H...N hydrogen bonds are also present in the crystal structure.