Tetra­kis(μ-3-aza­niumylbenzoato)-κ(3) O:O,O′;κ(3) O,O′:O;κ(4) O:O′-bis­[triaqua­chloridolanthanum(III)] tetra­chloride dihydrate

The tiltle complex, [La(2)(C(7)H(7)NO(2))(4)Cl(2)(H(2)O)(6)]Cl(4)·2H(2)O, is a centrosymmetric dimer formed by edge-sharing LaO(5)(H(2)O)(3)Cl polyhedra linked together by a carboxyl­ate ligand. The two La(III) metal ions are linked by two bidentate bridging carboxyl­ate groups with a κ(2) O:O′ coordination mode and two bidentate chelating bridging carboxyl­ate groups with a κ(3) O:O,O′ coordination mode. The coordination sphere of lanthanum, completed by a terminal chloride and three water mol­ecules, adopts a distorted tricapped trigonal–prismatic arrangement. N—H⋯Cl, N—H⋯O and O—H(water)⋯Cl hydrogen bonds, and slipped π–π inter­actions between parallel benzene rings [centroid–centroid distance of 3.647 (3) Å] are observed in the structure. These combine to stabilize a three-dimensional network.