A {Ag17S8} cluster-based coordination polymer linked by bridging CO32− ligands

A {Ag17S8} dimer containing [Ag17(StBu)8(CF3COO)5(CF3COO)(CO3)]+ cationic cluster and [Ag17(StBu)8(CF3COO)4(H2O)4(CO3)2(CO3)]− anionic cluster is extended into a network by bridging CO32−. [Display omitted] •A 2D layer structure of compound 1 based on {Ag17S8} clusters has been obtained.•The bridging ligand CO32− plays an important role in the 2D layer structure of 1.•The 2D network in 1 is parallel to the bc plane with a topology symbol of {63}.•Luminescence properties of 1 have been investigated. Cluster-based coordination frameworks superior to single metal-ion based coordination frameworks possess highly connected nets, large porous channels and enhanced stability. The carbonate anion (CO32−), an excellent anion template, can also serve as a rigid ligand with planar triangular geometry. It is an effective means of utilizing renewable carbon resources by the fixation of atmospheric carbon dioxide. Therefore, pursuing complex functional cluster-based coordination framework materials bridging by CO32− ligand is a sensible idea. Herein, compound {[Ag34(SBut)16(CF3COO)10(CO3)5(H2O)4][Et3N+]2}n (1) (Ag17S8 dimer) consists of a [Ag17(SBut)8(CF3COO)6(CO3)]+ cationic secondary building unit (SBU), a [Ag17(SBut)8(CF3COO)4(CO3)3(H2O)4]− anionic SBU and a bridging CO32− ligand in an asymmetric unit, which is extended into a 2D honeycomb network parallel to the bc plane with a simple topology symbol of {63}. Compound 1 has been well defined and the luminescence properties of 1 have been investigated.