RbEu3F10 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to four equivalent F(1) and twelve equivalent F(2) atoms to form distorted edge-sharing RbF16 tetrahedra. Eu(1) is bonded in a 8-coordinate geometry to four equivalent F(1) and four equivalent F(2) atoms. There are two inequivalent F sites. In the first F site, F(1) is bonded to one Rb(1) and three equivalent Eu(1) atoms to form a mixture of edge and corner-sharing FRbEu3 tetrahedra. In the second F site, F(2) is bonded in a bent 150 degrees geometry to two equivalent Rb(1) and two equivalent Eu(1) atoms.
RbEu3F10 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to four equivalent F(1) and twelve equivalent F(2) atoms to form distorted edge-sharing RbF16 tetrahedra. All Rb(1)-F(1) bond lengths are 2.89 Å. All Rb(1)-F(2) bond lengths are 3.33 Å. Eu(1) is bonded in a 8-coordinate geometry to four equivalent F(1) and four equivalent F(2) atoms. All Eu(1)-F(1) bond lengths are 2.44 Å. All Eu(1)-F(2) bond lengths are 2.30 Å. There are two inequivalent F sites. In the first F site, F(1) is bonded to one Rb(1) and three equivalent Eu(1) atoms to form a mixture of edge and corner-sharing FRbEu3 tetrahedra. In the second F site, F(2) is bonded in a bent 150 degrees geometry to two equivalent Rb(1) and two equivalent Eu(1) atoms.