(a) Coordination environment of the AgI atoms and ethynide groups in (II). Symmetry codes: (A) ; (B) . The argentophilic Ag⋯Ag distances, shown as thick purple rods, lie in the range 2.70−3.40 Å. Ag atoms are drawn with displacement ellipsoids at 50% probability. H atoms and trifluoroacetate ligands are omitted for clarity. (b) Perspective view of the supramolecular layer structure in (II), showing notable C—H⋯F contacts (Table 2).