X-ray single crystal structures of Hg(AuF6)2 and AgFAuF6

► Crystal structures of Hg(AuF6)2 and AgFAuF6 were determined. ► Crystal structure of Hg(AuF6)2 represents the new structural type type of MII(XVF6)2 compounds. ► AgFAuF6 is isostructural to AgFMF6 (M = As, Ir).