Modular assembly of a functional polyoxometalate-based open framework constructed from unsupported Ag^I⋯Ag^I interactions

(Figure Presented) No ligand support: Modular assembly of the title system (see picture; Ag purple, W blue, O red) has been achieved using {H ₃W₁₂O₄₀}^5- and {Ag₂} ²⁺ building blocks to give a material with [Ag(CH₃CN) ₄]⁺ ions in its microporous channels. This framework is constructed by unsupported Ag^I⋯Ag^I interactions, and sorption studies show that the framework can reversibly adsorb up to 10 wt% acetonitrile.