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

The title compound, [Ni(C8H3BrO4)(C5H5N)(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) angstrom. The two carboxylate groups of the ligand coordinate the NiII 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 pi-pi interactions between the pyridine rings [centroid-centroid distance 3.601 (4) angstrom], forming a three-dimensional motif.