CsAsF6 crystallizes in the trigonal R-3 space group. Cs(1) is bonded to twelve equivalent F(1) atoms to form CsF12 cuboctahedra that share corners with six equivalent As(1)F6 octahedra, edges with six equivalent Cs(1)F12 cuboctahedra, and faces with two equivalent As(1)F6 octahedra. The corner-sharing octahedral tilt angles are 35°. As(1) is bonded to six equivalent F(1) atoms to form AsF6 octahedra that share corners with six equivalent Cs(1)F12 cuboctahedra and faces with two equivalent Cs(1)F12 cuboctahedra. F(1) is bonded in a single-bond geometry to two equivalent Cs(1) and one As(1) atom.
CsAsF6 crystallizes in the trigonal R-3 space group. Cs(1) is bonded to twelve equivalent F(1) atoms to form CsF12 cuboctahedra that share corners with six equivalent As(1)F6 octahedra, edges with six equivalent Cs(1)F12 cuboctahedra, and faces with two equivalent As(1)F6 octahedra. The corner-sharing octahedral tilt angles are 35°. There are six shorter (3.10 Å) and six longer (3.24 Å) Cs(1)-F(1) bond lengths. As(1) is bonded to six equivalent F(1) atoms to form AsF6 octahedra that share corners with six equivalent Cs(1)F12 cuboctahedra and faces with two equivalent Cs(1)F12 cuboctahedra. All As(1)-F(1) bond lengths are 1.75 Å. F(1) is bonded in a single-bond geometry to two equivalent Cs(1) and one As(1) atom.