Silver(i)–organic frameworks assembled with flexible supramolecular synthons with a pendant ethynide arm attached to the heteroaryl skeleton

Abstract

The reactions of flexible supramolecular synthons with a pendant ethynide arm attached to a heteroaryl skeleton and different silver(I) salts under solvent evaporation conditions yielded four silver–organic frameworks. In 1–4, the Ag₇, Ag₈ and Ag₉ aggregates are fused together through trifluoroacetate groups and/or Ag–N coordination bonds to generate a 2D layer, and finally linked into 3D supramolecular networks by argentophilic interactions or hydrogen bonding. The diversities of the present structures also indicate that both solvent and the anionic component play vital roles in the assembly of silver(I)–ethynide complexes. In addition, their luminescence behaviors have been studied in the solid state.