A two-dimensional silver-iodide organic network constructed from a unique [Ag₆I₆] hexa­gonal prism-based one-dimensional column motif

A novel two-dimensional coordination polymer, poly[[[mu]₂-1,3-bis­(2-methyl-1H-imidazol-1-yl)propane]di-[mu]₄-iodido-di-[mu]₃-iodido-silver(I)], [Ag₄I₄(C₁₁H₁₆N₄)]_n, (I), has been synthesized by solvothermal reaction of AgNO₃, KI and 1,3-bis­(2-methyl-1H-imidazol-1-yl)propane (bmimp). In (I), the two unique Ag^I cations have AgNI₃ and AgI₄ four-coordinated tetra­hedral geometries. The bmimp ligand has imposed twofold symmetry. The Ag^I cations and iodide anions form a unique one-dimensional polymeric column motif incorporating [Ag₆I₆] hexa­gonal prisms, which are then connected by bmimp ligands to form two-dimensional organic-inorganic layers. The layers are arranged in parallel in an ABAB fashion and are packed into the resultant three-dimensional supra­molecular framework by van der Waals inter­actions.