The diffuse X-ray scattering and the structure of the iodine chains in bis(1,2-benzoquinonedioximato)₂nickel.0.5I[Ni(BCD)₂.0.5I]

Diffuse X-ray scattering from the title compound, containing linear iodine chains, indicates the formation of I₃ ions. These anions are disordered from their averaged positions. The oxidation number of the Ni atoms in this mixed-valence one-dimensional solid is 2.17.