Poly[bis[μ-1,4-bis(imidazol-1-yl)butane]dicyanatonickel(II)]

The coordination geometry of the NiII atom in the title complex, [Ni(NCO)2(C10H14N4)2]n or [Ni(NCO)2(bimb)2]n, where bimb is 1,4-bis­(imidazol-1-yl)butane, is distorted octa­hedral, in which the NiII atom lies on an inversion centre, coordinated by four N atoms from the imidazole rings of four symmetry-related bimb ligands in the equatorial positions and two N atoms of two symmetry-related NCO− ligands in the axial positions. The NiII atoms are bridged by four bimb ligands to form a two-dimensional (4,4)-network.