Crystal structure of poly[tetra-μ-cyanido-ethanolbis(2-iodopyrazine)digold(I)iron(II)]

In the title polymeric complex, [Au2Fe(CN)4(C4H3IN2)2(C2H6O)]n, the FeII cation is coordinated by two iodopyrazine molecules, one ethanol molecule and three dicyanoaurate anions in a distorted N5O octahedral geometry. In the crystal, the dicyanoaurate anions bridge the FeII cations to form polymeric chains propagating along the b-axis direction. Stabilization of the crystal structure is provided by O—H...N hydrogen bonds and π–π stacking between parallel iodopyrazine rings of neighbouring chains, the centroid–centroid distances being 3.654 (10) and 3.658 (9) Å.