Tetra­kis(μ-5-bromo­nicotinato)-κ(3) O,O′:O′;κ(3) O:O,O′;κ(4) O:O′-bis­[diaqua­(5-bromo­nicotinato-κ(2) O,O′)neodymium(III)] dihydrate

In the title compound, [Nd(2)(C(6)H(3)BrNO(2))(6)(H(2)O)(4)]·2H(2)O, the Nd(III) ion is coordinated by nine O atoms from one chelating 5-bromo­nicotinate ligand, four bridging 5-bromo­nicotinate ligands and two water mol­ecules, exhibiting a distorted three-capped triangular-prismatic geometry. Two Nd(III) ions are bridged by four carboxyl­ate groups in bi- and tridentate modes, forming a centrosymmetric dinuclear unit, with an Nd⋯Nd distance of 4.0021 (5) Å, and intra­molecular π–π inter­actions between the pyridine rings [centroid–centroid distance = 3.960 (2) Å]. Inter­molecular π–π inter­actions [centroid–centroid distances = 3.820 (2) and 3.804 (2) Å] and O—H⋯N and O—H⋯O hydrogen bonds connect the dinuclear mol­ecules into a three-dimensional supra­molecular network.