RbLa9(IrO6)4 crystallizes in the tetragonal I4/m space group. Rb(1) is bonded in a distorted linear geometry to two equivalent O(5) and eight equivalent O(1) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(3), one O(4), one O(5), three equivalent O(1), and three equivalent O(2) atoms. In the second La site, La(2) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form LaO6 octahedra that share corners with two equivalent Ir(2)O6 octahedra and corners with four equivalent Ir(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-56°. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form IrO6 octahedra that share corners with two equivalent La(2)O6 octahedra. The corner-sharing octahedral tilt angles are 56°. In the second Ir site, Ir(2) is bonded to one O(4), one O(5), and four equivalent O(2) atoms to form IrO6 octahedra that share  a cornercorner with one La(2)O6 octahedra. The corner-sharing octahedra are not tilted. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to one La(2), two equivalent La(1), and one Ir(1) atom. In the second O site, O(4) is bonded in a distorted linear geometry to one La(2), four equivalent La(1), and one Ir(2) atom. In the third O site, O(5) is bonded to one Rb(1), four equivalent La(1), and one Ir(2) atom to form distorted corner-sharing ORbLa4Ir octahedra. The corner-sharing octahedra are not tilted. In the fourth O site, O(1) is bonded in a 5-coordinate geometry to one Rb(1), three equivalent La(1), and one Ir(1) atom. In the fifth O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent La(1) and one Ir(2) atom.
RbLa9(IrO6)4 crystallizes in the tetragonal I4/m space group. Rb(1) is bonded in a distorted linear geometry to two equivalent O(5) and eight equivalent O(1) atoms. Both Rb(1)-O(5) bond lengths are 2.69 Å. All Rb(1)-O(1) bond lengths are 3.35 Å. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(3), one O(4), one O(5), three equivalent O(1), and three equivalent O(2) atoms. The La(1)-O(3) bond length is 2.62 Å. The La(1)-O(4) bond length is 2.85 Å. The La(1)-O(5) bond length is 2.89 Å. There are a spread of La(1)-O(1) bond distances ranging from 2.45-2.75 Å. There are a spread of La(1)-O(2) bond distances ranging from 2.44-2.60 Å. In the second La site, La(2) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form LaO6 octahedra that share corners with two equivalent Ir(2)O6 octahedra and corners with four equivalent Ir(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-56°. Both La(2)-O(4) bond lengths are 2.28 Å. All La(2)-O(3) bond lengths are 2.47 Å. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form IrO6 octahedra that share corners with two equivalent La(2)O6 octahedra. The corner-sharing octahedral tilt angles are 56°. Both Ir(1)-O(3) bond lengths are 1.95 Å. All Ir(1)-O(1) bond lengths are 2.04 Å. In the second Ir site, Ir(2) is bonded to one O(4), one O(5), and four equivalent O(2) atoms to form IrO6 octahedra that share  a cornercorner with one La(2)O6 octahedra. The corner-sharing octahedra are not tilted. The Ir(2)-O(4) bond length is 2.02 Å. The Ir(2)-O(5) bond length is 1.95 Å. All Ir(2)-O(2) bond lengths are 1.98 Å. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 4-coordinate geometry to one La(2), two equivalent La(1), and one Ir(1) atom. In the second O site, O(4) is bonded in a distorted linear geometry to one La(2), four equivalent La(1), and one Ir(2) atom. In the third O site, O(5) is bonded to one Rb(1), four equivalent La(1), and one Ir(2) atom to form distorted corner-sharing ORbLa4Ir octahedra. The corner-sharing octahedra are not tilted. In the fourth O site, O(1) is bonded in a 5-coordinate geometry to one Rb(1), three equivalent La(1), and one Ir(1) atom. In the fifth O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent La(1) and one Ir(2) atom.