RbIn3F10 crystallizes in the orthorhombic Pmma space group. Rb(1) is bonded in a 10-coordinate geometry to two equivalent F(5), four equivalent F(1), and four equivalent F(4) atoms. There are two inequivalent In sites. In the first In site, In(1) is bonded to one F(2), two equivalent F(1), two equivalent F(4), and two equivalent F(5) atoms to form InF7 pentagonal bipyramids that share corners with two equivalent In(2)F6 octahedra, corners with three equivalent In(1)F7 pentagonal bipyramids, and  an edgeedge with one In(1)F7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 44°. In the second In site, In(2) is bonded to two equivalent F(3) and four equivalent F(1) atoms to form InF6 octahedra that share corners with two equivalent In(2)F6 octahedra and corners with four equivalent In(1)F7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. There are five inequivalent F sites. In the first F site, F(1) is bonded in a 2-coordinate geometry to one Rb(1), one In(1), and one In(2) atom. In the second F site, F(2) is bonded in a linear geometry to two equivalent In(1) atoms. In the third F site, F(3) is bonded in a bent 150 degrees geometry to two equivalent In(2) atoms. In the fourth F site, F(4) is bonded to two equivalent Rb(1) and two equivalent In(1) atoms to form a mixture of distorted corner and edge-sharing FRb2In2 tetrahedra. In the fifth F site, F(5) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent In(1) atoms.
RbIn3F10 crystallizes in the orthorhombic Pmma space group. Rb(1) is bonded in a 10-coordinate geometry to two equivalent F(5), four equivalent F(1), and four equivalent F(4) atoms. Both Rb(1)-F(5) bond lengths are 3.13 Å. All Rb(1)-F(1) bond lengths are 3.12 Å. There are two shorter (2.85 Å) and two longer (2.97 Å) Rb(1)-F(4) bond lengths. There are two inequivalent In sites. In the first In site, In(1) is bonded to one F(2), two equivalent F(1), two equivalent F(4), and two equivalent F(5) atoms to form InF7 pentagonal bipyramids that share corners with two equivalent In(2)F6 octahedra, corners with three equivalent In(1)F7 pentagonal bipyramids, and  an edgeedge with one In(1)F7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 44°. The In(1)-F(2) bond length is 2.12 Å. Both In(1)-F(1) bond lengths are 2.16 Å. Both In(1)-F(4) bond lengths are 2.17 Å. Both In(1)-F(5) bond lengths are 2.09 Å. In the second In site, In(2) is bonded to two equivalent F(3) and four equivalent F(1) atoms to form InF6 octahedra that share corners with two equivalent In(2)F6 octahedra and corners with four equivalent In(1)F7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. Both In(2)-F(3) bond lengths are 2.11 Å. All In(2)-F(1) bond lengths are 2.08 Å. There are five inequivalent F sites. In the first F site, F(1) is bonded in a 2-coordinate geometry to one Rb(1), one In(1), and one In(2) atom. In the second F site, F(2) is bonded in a linear geometry to two equivalent In(1) atoms. In the third F site, F(3) is bonded in a bent 150 degrees geometry to two equivalent In(2) atoms. In the fourth F site, F(4) is bonded to two equivalent Rb(1) and two equivalent In(1) atoms to form a mixture of distorted corner and edge-sharing FRb2In2 tetrahedra. In the fifth F site, F(5) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent In(1) atoms.