Theoretical studies of an all-metal [Sb3Au3Sb3]3− sandwich complex and its congeners [X3M3X3]3− (M = Cu, Ag, Au, Rg; X = N, P, As, Sb, Bi, Uup) as well as [Sb3(Au3Sb3)n]3− (n = 1–4) oligomers indicate the possible existence of other [ApMpAp]x− sandwich compounds and oligomers.