{[WS4Cu4(4,4′‐bpy)4][WS4Cu4I4(4,4′‐bpy)2]}∞—An Unusual 3D Porous Coordination Polymer Formed from the Preformed Cluster [Et4N]4[WS4Cu4I6]

An unusual supramolecular compound {[WS4Cu4(4,4′-bpy)4][WS4Cu4I4(4,4′-bpy)2]}∞ (see picture) was obtained from the self-assembly of a preformed mixed-metal sulfide cluster, [NEt4]4[WS4Cu4I6]. The product consists of four interpenetrating diamond-type nets (two cationic and two anionic) and has large open channels that are lined with “receptor sites” for guest iodine molecules. 4,4′-bpy=4,4′-bipyridyl.