Sm2MnRhO6 crystallizes in the monoclinic P2_1/c space group. Sm(1) is bonded in a 8-coordinate geometry to two equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with six equivalent Rh(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-38°. Rh(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form RhO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-38°. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sm(1), one Mn(1), and one Rh(1) atom to form distorted corner-sharing OSm2MnRh trigonal pyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Sm(1), one Mn(1), and one Rh(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to three equivalent Sm(1), one Mn(1), and one Rh(1) atom.
Sm2MnRhO6 crystallizes in the monoclinic P2_1/c space group. Sm(1) is bonded in a 8-coordinate geometry to two equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. There is one shorter (2.34 Å) and one longer (2.39 Å) Sm(1)-O(1) bond length. There are a spread of Sm(1)-O(2) bond distances ranging from 2.34-2.72 Å. There are a spread of Sm(1)-O(3) bond distances ranging from 2.37-2.63 Å. Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with six equivalent Rh(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-38°. Both Mn(1)-O(1) bond lengths are 1.95 Å. Both Mn(1)-O(2) bond lengths are 2.11 Å. Both Mn(1)-O(3) bond lengths are 2.11 Å. Rh(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form RhO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-38°. Both Rh(1)-O(1) bond lengths are 2.07 Å. Both Rh(1)-O(2) bond lengths are 2.09 Å. Both Rh(1)-O(3) bond lengths are 2.09 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sm(1), one Mn(1), and one Rh(1) atom to form distorted corner-sharing OSm2MnRh trigonal pyramids. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Sm(1), one Mn(1), and one Rh(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to three equivalent Sm(1), one Mn(1), and one Rh(1) atom.