catena-Poly[[tripyridine­nickel(II)]-μ-5-bromo­isophthalato]

The title compound, [Ni(C(8)H(3)BrO(4))(C(5)H(5)N)(3)], is the first structurally characterized complex with a transition metal coordinated by a 5-bromo­isophthalate anion. The Ni(II) ion is coordinated by three O atoms from the carboxyl­ate groups and three N atoms from three pyridine ligands in a distorted octa­hedral coordination geometry. The 5-bromo­isophthalate anion is planar within 0.057 (2) Å. The two carboxyl­ate groups of the ligand coordinate the Ni(II) ions in a chelating and monodentate mode, linking the metal atoms into infinite chains along the [010] direction. These chains are stacked together via strong π–π inter­actions between the pyridine rings [centroid–centroid distance 3.601 (4) Å], forming a three-dimensional motif.