Sm7Rh3 crystallizes in the hexagonal P6_3mc space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Rh(1) atoms. In the second Sm site, Sm(3) is bonded in a distorted water-like geometry to two equivalent Rh(1) atoms. In the third Sm site, Sm(2) is bonded in a 3-coordinate geometry to three equivalent Rh(1) atoms. Rh(1) is bonded in a 6-coordinate geometry to one Sm(1), two equivalent Sm(3), and three equivalent Sm(2) atoms.
Sm7Rh3 crystallizes in the hexagonal P6_3mc space group. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Rh(1) atoms. All Sm(1)-Rh(1) bond lengths are 2.87 Å. In the second Sm site, Sm(3) is bonded in a distorted water-like geometry to two equivalent Rh(1) atoms. Both Sm(3)-Rh(1) bond lengths are 2.90 Å. In the third Sm site, Sm(2) is bonded in a 3-coordinate geometry to three equivalent Rh(1) atoms. There is one shorter (2.90 Å) and two longer (2.93 Å) Sm(2)-Rh(1) bond lengths. Rh(1) is bonded in a 6-coordinate geometry to one Sm(1), two equivalent Sm(3), and three equivalent Sm(2) atoms.