catena-Poly[[[tetra­aqua­lanthanum(III)]-di-μ-isonicotinato-κ(4) O:O′] chloride]

In the title compound, {[La(C(6)H(4)NO(2))(2)(H(2)O)(4)]Cl}(n), the La(III) atom lies on a twofold rotation axis and is eight-coordinated by four O atoms from four isonicotinate ligands and four water mol­ecules in a distorted square-anti­prismatic coodination environment. Adjacent La(III) atoms are bridged by two carboxyl­ate groups from two isonicotinate ligands, forming an extended chain along [001]. These chains are linked through O—H⋯N hydrogen bonds into a three-dimensional network with channels in which the chloride anions form O—H⋯Cl hydrogen bonds. Intra­chain O—H⋯O hydrogen bonds and π–π inter­actions [centroid–centroid distance = 3.908 (2) Å] are also observed.