An unusual silver–ethynide polymeric chain containing centrosymmetric Ag14 cluster segments stabilized by mixed carboxylate ligands

• New silver(I)–ethynide complex featuring an infinite coordination polymeric chain
• Ag14(CCtBu)8(CF3CO2)24 + cluster segments bridged by two different carboxylates
• Versatile supramolecular synthon RCC ⊃ Agn for synthesis of organosilver complexes

From the reaction of AgCCtBu with 9-hydroxy-9-fluorenecarboxylic acid (HL) and AgCF3CO2, we have isolated a new type of organosilver(I) coordination polymeric chain, namely {[Ag14(CCtBu)8(L)2(CF3CO2)4]·2CH3OH}n, which contains centrosymmetric [Ag14(CCtBu)8(CF3CO2)2]4 + cluster segments bridged by pairs of L and trifluoroacetate ligands.

The crystalline silver(I)–ethynide complex {[Ag14(CCtBu)8(L)2(CF3CO2)4]·2CH3OH}n (HL = 9-hydroxy-9-fluorenecarboxylic acid) is composed of a packing of organosilver(I) coordination polymeric chains each containing centrosymmetric, bar-like [Ag14(CCtBu)8(CF3CO2)2]4 + cluster segments bridged by pairs of L and trifluoroacetate ligands.Figure optionsDownload as PowerPoint slide