RbMgCoF6 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 RbF6 octahedra that share corners with six equivalent Mg(1)F6 octahedra and corners with six equivalent Co(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 68-69°. 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 Co(1)F6 octahedra, and corners with six equivalent Rb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 43-69°. Co(1) is bonded to two equivalent F(1) and four equivalent F(3) atoms to form CoF6 octahedra that share corners with two equivalent Co(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 42-69°. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent Co(1) atoms. In the second F site, F(2) is bonded in a 2-coordinate 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 Co(1) atom.
RbMgCoF6 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 RbF6 octahedra that share corners with six equivalent Mg(1)F6 octahedra and corners with six equivalent Co(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 68-69°. The Rb(1)-F(1) bond length is 3.28 Å. The Rb(1)-F(2) bond length is 3.10 Å. All Rb(1)-F(3) bond lengths are 3.17 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 Co(1)F6 octahedra, and corners with six equivalent Rb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 43-69°. Both Mg(1)-F(2) bond lengths are 1.96 Å. All Mg(1)-F(3) bond lengths are 2.03 Å. Co(1) is bonded to two equivalent F(1) and four equivalent F(3) atoms to form CoF6 octahedra that share corners with two equivalent Co(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 42-69°. Both Co(1)-F(1) bond lengths are 1.97 Å. All Co(1)-F(3) bond lengths are 1.92 Å. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent Co(1) atoms. In the second F site, F(2) is bonded in a 2-coordinate 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 Co(1) atom.