Silver alkynyl coordination chains and clusters assembled with sulfonates

The metal cluster can be controlled by adjusting the size of the anionic templates and by using different peripheral organic ligands. In this paper, we employ RC---CAg (R = 4-tBu-Ph, Ph, tBu), CF3SO3Ag, NH4X (X = Br, VO3) acting as starting materials to obtain four silver ethynide complexes incorporating the sulfonate ligands, namely, [Ag3(4-tBu-PhC---C)2(CF3SO3)]n (1), {[Br@Ag15(PhC---C)10(CF3SO3)4][Ag4(PhC---C)4][Br@Ag15(PhC---C)10(CF3SO3)4]}n (2), [Br@Ag15(tBuC---C)10(CF3SO3)4]n (3) and [V2O7@Ag24(tBuC---C)14(CF3SO3)6] (4). Single-crystal X-ray analysis revealed that complexes 1-3 display different coordination chain structures, while 4 contain high-nuclearity silver (I) composite clusters enclosing a [V2O7]4-template ion, that are supported by CF3SO3- ligands.

Automated summary

The structure of metal clusters can be controlled by adjusting templates and ligands. In this paper, four silver ethynide complexes with sulfonate ligands were synthesized and their coordination chains were analyzed. One of the complexes also contains a high-nuclearity silver composite cluster with a template ion.