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metal-organic compounds
In the first title compound, [Ni(C2H3N)2(C11H26N4)][I3]2, the NiII centre is coordinated octahedrally: all four N-donor atoms of the macrocyclic ligand occupy an equatorial plane and the coordination is completed by two axial acetonitrile ligands. Each N—H group forms a contact of 2.97–3.11 Å to one I atom of an I3− anion. One of these anions participates in long II contacts of 4.008 (3) Å to form infinite chains of symmetry-related anions. In the second title compound [Pd(C11H26N4)][I3]2, each PdII centre is coordinated in an equatorial plane by four N-donor atoms from the macrocyclic ligand and axially by a terminal iodine from each of two I3− anions at 3.525 (4) Å. The same I atom forms an II contact of 4.094 (3) Å such that cations and pairs of anions alternate within one-dimensional zigzag chains.