Cs2YAuF6 crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent F(1) atoms to form CsF12 cuboctahedra that share corners with twelve equivalent Cs(1)F12 cuboctahedra, faces with six equivalent Cs(1)F12 cuboctahedra, faces with four equivalent Y(1)F6 octahedra, and faces with four equivalent Au(1)F6 octahedra. Y(1) is bonded to six equivalent F(1) atoms to form YF6 octahedra that share corners with six equivalent Au(1)F6 octahedra and faces with eight equivalent Cs(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. Au(1) is bonded to six equivalent F(1) atoms to form AuF6 octahedra that share corners with six equivalent Y(1)F6 octahedra and faces with eight equivalent Cs(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. F(1) is bonded in a 6-coordinate geometry to four equivalent Cs(1), one Y(1), and one Au(1) atom.
Cs2YAuF6 crystallizes in the cubic Fm-3m space group. Cs(1) is bonded to twelve equivalent F(1) atoms to form CsF12 cuboctahedra that share corners with twelve equivalent Cs(1)F12 cuboctahedra, faces with six equivalent Cs(1)F12 cuboctahedra, faces with four equivalent Y(1)F6 octahedra, and faces with four equivalent Au(1)F6 octahedra. All Cs(1)-F(1) bond lengths are 2.95 Å. Y(1) is bonded to six equivalent F(1) atoms to form YF6 octahedra that share corners with six equivalent Au(1)F6 octahedra and faces with eight equivalent Cs(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. All Y(1)-F(1) bond lengths are 1.93 Å. Au(1) is bonded to six equivalent F(1) atoms to form AuF6 octahedra that share corners with six equivalent Y(1)F6 octahedra and faces with eight equivalent Cs(1)F12 cuboctahedra. The corner-sharing octahedra are not tilted. All Au(1)-F(1) bond lengths are 2.23 Å. F(1) is bonded in a 6-coordinate geometry to four equivalent Cs(1), one Y(1), and one Au(1) atom.