Aqua­penta­kis(1H-imidazole-κN³)nickel(II) dibromo­succinate

The title compound, [Ni(C₃H₄N₂)₅(H₂O)](C₄H₂Br₂O₄), consists of Ni^II complex cations and dibromo­succinate anions. The Ni atom, water O atom and one imidazole N atom of the complex cation lie on a twofold axis. The anion lies on an inversion centre. The crystal packing is reinforced by O—H...O and N—H...O hydrogen bonds, but there are no π–π stacking inter­actions even though the complex contains five aromatic imidazole rings. The compound is isostructural with its cobalt analogue.