RbMgAlF6 crystallizes in the orthorhombic Imma space group. Rb(1) is bonded to one F(1), one F(2), and four equivalent F(3) atoms to form distorted RbF6 octahedra that share corners with six equivalent Mg(1)F6 octahedra and corners with six equivalent Al(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 66-73°. Mg(1) is bonded to two equivalent F(2) and four equivalent F(3) atoms to form MgF6 octahedra that share corners with two equivalent Mg(1)F6 octahedra, corners with four equivalent Al(1)F6 octahedra, and corners with six equivalent Rb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 42-73°. Al(1) is bonded to two equivalent F(1) and four equivalent F(3) atoms to form AlF6 octahedra that share corners with two equivalent Al(1)F6 octahedra, corners with four equivalent Mg(1)F6 octahedra, and corners with six equivalent Rb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 33-73°. There are three inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one Rb(1) and two equivalent Al(1) atoms. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Rb(1) and two equivalent Mg(1) atoms. In the third F site, F(3) is bonded in a 2-coordinate geometry to one Rb(1), one Mg(1), and one Al(1) atom.
RbMgAlF6 crystallizes in the orthorhombic Imma space group. Rb(1) is bonded to one F(1), one F(2), and four equivalent F(3) atoms to form distorted RbF6 octahedra that share corners with six equivalent Mg(1)F6 octahedra and corners with six equivalent Al(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 66-73°. The Rb(1)-F(1) bond length is 3.32 Å. The Rb(1)-F(2) bond length is 2.91 Å. All Rb(1)-F(3) bond lengths are 3.13 Å. Mg(1) is bonded to two equivalent F(2) and four equivalent F(3) atoms to form MgF6 octahedra that share corners with two equivalent Mg(1)F6 octahedra, corners with four equivalent Al(1)F6 octahedra, and corners with six equivalent Rb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 42-73°. Both Mg(1)-F(2) bond lengths are 1.98 Å. All Mg(1)-F(3) bond lengths are 2.02 Å. Al(1) is bonded to two equivalent F(1) and four equivalent F(3) atoms to form AlF6 octahedra that share corners with two equivalent Al(1)F6 octahedra, corners with four equivalent Mg(1)F6 octahedra, and corners with six equivalent Rb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 33-73°. Both Al(1)-F(1) bond lengths are 1.86 Å. All Al(1)-F(3) bond lengths are 1.81 Å. There are three inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one Rb(1) and two equivalent Al(1) atoms. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Rb(1) and two equivalent Mg(1) atoms. In the third F site, F(3) is bonded in a 2-coordinate geometry to one Rb(1), one Mg(1), and one Al(1) atom.