Sr6(RhO3)5 crystallizes in the trigonal R32 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. There are three inequivalent Rh sites. In the first Rh site, Rh(1) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form face-sharing RhO6 octahedra. In the second Rh site, Rh(2) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form face-sharing RhO6 octahedra. In the third Rh site, Rh(3) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to one Sr(1), one Sr(2), one Rh(2), and one Rh(3) atom. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Rh(1) atoms to form a mixture of corner, edge, and face-sharing OSr4Rh2 octahedra. The corner-sharing octahedral tilt angles range from 4-63°. In the third O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Rh(1), and one Rh(2) atom to form a mixture of distorted corner, edge, and face-sharing OSr4Rh2 octahedra. The corner-sharing octahedral tilt angles range from 4-63°.
Sr6(RhO3)5 crystallizes in the trigonal R32 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Both Sr(1)-O(1) bond lengths are 2.56 Å. Both Sr(1)-O(2) bond lengths are 2.68 Å. There are two shorter (2.53 Å) and two longer (2.89 Å) Sr(1)-O(3) bond lengths. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Both Sr(2)-O(1) bond lengths are 2.47 Å. Both Sr(2)-O(2) bond lengths are 2.66 Å. There are two shorter (2.68 Å) and two longer (2.78 Å) Sr(2)-O(3) bond lengths. There are three inequivalent Rh sites. In the first Rh site, Rh(1) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form face-sharing RhO6 octahedra. All Rh(1)-O(2) bond lengths are 2.03 Å. All Rh(1)-O(3) bond lengths are 2.03 Å. In the second Rh site, Rh(2) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form face-sharing RhO6 octahedra. All Rh(2)-O(1) bond lengths are 1.99 Å. All Rh(2)-O(3) bond lengths are 2.08 Å. In the third Rh site, Rh(3) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. All Rh(3)-O(1) bond lengths are 2.06 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to one Sr(1), one Sr(2), one Rh(2), and one Rh(3) atom. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Rh(1) atoms to form a mixture of corner, edge, and face-sharing OSr4Rh2 octahedra. The corner-sharing octahedral tilt angles range from 4-63°. In the third O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Rh(1), and one Rh(2) atom to form a mixture of distorted corner, edge, and face-sharing OSr4Rh2 octahedra. The corner-sharing octahedral tilt angles range from 4-63°.