Rb2MnF6 crystallizes in the hexagonal P6_3mc space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to six equivalent F(1) and six equivalent F(2) atoms to form RbF12 cuboctahedra that share corners with twelve equivalent Rb(1)F12 cuboctahedra, faces with six equivalent Rb(2)F12 cuboctahedra, and faces with four equivalent Mn(1)F6 octahedra. In the second Rb site, Rb(2) is bonded to six equivalent F(1) and six equivalent F(2) atoms to form RbF12 cuboctahedra that share corners with six equivalent Rb(2)F12 cuboctahedra, corners with three equivalent Mn(1)F6 octahedra, faces with two equivalent Rb(2)F12 cuboctahedra, faces with six equivalent Rb(1)F12 cuboctahedra, and faces with three equivalent Mn(1)F6 octahedra. The corner-sharing octahedral tilt angles are 17°. Mn(1) is bonded to three equivalent F(1) and three equivalent F(2) atoms to form MnF6 octahedra that share corners with three equivalent Rb(2)F12 cuboctahedra, faces with three equivalent Rb(2)F12 cuboctahedra, and faces with four equivalent Rb(1)F12 cuboctahedra. There are two inequivalent F sites. In the first F site, F(1) is bonded in a single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), and one Mn(1) atom. In the second F site, F(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), and one Mn(1) atom.
Rb2MnF6 crystallizes in the hexagonal P6_3mc space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to six equivalent F(1) and six equivalent F(2) atoms to form RbF12 cuboctahedra that share corners with twelve equivalent Rb(1)F12 cuboctahedra, faces with six equivalent Rb(2)F12 cuboctahedra, and faces with four equivalent Mn(1)F6 octahedra. There are three shorter (2.92 Å) and three longer (2.98 Å) Rb(1)-F(1) bond lengths. All Rb(1)-F(2) bond lengths are 2.95 Å. In the second Rb site, Rb(2) is bonded to six equivalent F(1) and six equivalent F(2) atoms to form RbF12 cuboctahedra that share corners with six equivalent Rb(2)F12 cuboctahedra, corners with three equivalent Mn(1)F6 octahedra, faces with two equivalent Rb(2)F12 cuboctahedra, faces with six equivalent Rb(1)F12 cuboctahedra, and faces with three equivalent Mn(1)F6 octahedra. The corner-sharing octahedral tilt angles are 17°. All Rb(2)-F(1) bond lengths are 2.98 Å. There are three shorter (2.96 Å) and three longer (3.14 Å) Rb(2)-F(2) bond lengths. Mn(1) is bonded to three equivalent F(1) and three equivalent F(2) atoms to form MnF6 octahedra that share corners with three equivalent Rb(2)F12 cuboctahedra, faces with three equivalent Rb(2)F12 cuboctahedra, and faces with four equivalent Rb(1)F12 cuboctahedra. All Mn(1)-F(1) bond lengths are 1.82 Å. All Mn(1)-F(2) bond lengths are 1.82 Å. There are two inequivalent F sites. In the first F site, F(1) is bonded in a single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), and one Mn(1) atom. In the second F site, F(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), and one Mn(1) atom.