Rb1 Au1 S2 O8

RbAuS₂O₈ is an experimental mixed-metal sulfate semiconductor containing rubidium, gold, and sulfate groups, representing a rare compound in the family of precious-metal chalcogenides and mixed-valence oxysulfides. This material falls within research-stage compounds being explored for solid-state ionics, photocatalysis, and optoelectronic applications where the combination of a mobile alkali metal (Rb), a noble metal (Au), and sulfate ligands may enable novel charge-transport or light-absorption properties. Current applications are primarily confined to academic materials discovery rather than established industrial production.