RbAuBr4

RbAuBr₄ is an intermetallic compound containing rubidium, gold, and bromine—a rare quaternary phase that falls outside conventional metallic alloy families. This material is primarily of research interest in solid-state chemistry and materials science rather than established industrial production, with potential applications in ionic conductivity studies, photonic materials, or specialized electronic devices where the unique electronic structure of gold-containing halides may be exploited.