The asymmetric unit of the title compound, [NiCl(2)(C(10)H(14)N(4))(2)](n), consists of one Ni(2+) ion which is located on an inversion center, one 1,4-bis-(imidazol-1-yl)butane (bimb) and one chloride ion. The Ni(2+) ion exhibits a distorted octa-hedral coordination environment defined by four N atoms from four bimb ligands in the equatorial plane and two chloride ions in axial positions. The bridging coordination mode of the bimb ligands leads to the formation of inter-penetrating square Ni(4)(bimb)(4) units that are arranged parallel to (001). The separation between the Ni atoms in these units is 13.740 (3) Å.