Abstract

The title compound, [Ni(CN)(C4H4N2)]n, was prepared by the hydro­thermal reaction of NiCl2, KCN and pyrazine. The NiII atoms are linked via cyanide ligands into a zigzag [NC–Ni–NC]∞ chain running parallel to [010]. These chains are further connected into a three-dimensional network by bridging pyrazine ligands, which have inversion symmetry. The coordination geometry around the NiII atom is distorted tetra­hedral, with one N and one C atom from the cyanide and two N atoms from the pyrazine ligands.

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