Sm11Ni4In9 crystallizes in the orthorhombic Cmmm space group. There are five inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to two equivalent Ni(1), two equivalent In(2), and four equivalent In(1) atoms. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to four equivalent In(1) and four equivalent In(2) atoms. In the third Sm site, Sm(3) is bonded in a 10-coordinate geometry to four equivalent Ni(1), two equivalent In(3), and four equivalent In(1) atoms. In the fourth Sm site, Sm(4) is bonded in a 10-coordinate geometry to four equivalent Ni(1), two equivalent In(3), and four equivalent In(2) atoms. In the fifth Sm site, Sm(5) is bonded in a distorted body-centered cubic geometry to eight equivalent In(2) atoms. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Sm(1), two equivalent Sm(3), two equivalent Sm(4), one In(1), one In(2), and one In(3) atom. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to two equivalent Sm(2), two equivalent Sm(3), four equivalent Sm(1), one Ni(1), and one In(1) atom. In the second In site, In(2) is bonded in a 10-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(4), two equivalent Sm(5), one Ni(1), and one In(2) atom. In the third In site, In(3) is bonded to four equivalent Sm(3), four equivalent Sm(4), and four equivalent Ni(1) atoms to form face-sharing InSm8Ni4 cuboctahedra.
Sm11Ni4In9 crystallizes in the orthorhombic Cmmm space group. There are five inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to two equivalent Ni(1), two equivalent In(2), and four equivalent In(1) atoms. Both Sm(1)-Ni(1) bond lengths are 2.78 Å. Both Sm(1)-In(2) bond lengths are 3.19 Å. There are two shorter (3.22 Å) and two longer (3.51 Å) Sm(1)-In(1) bond lengths. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to four equivalent In(1) and four equivalent In(2) atoms. All Sm(2)-In(1) bond lengths are 3.29 Å. All Sm(2)-In(2) bond lengths are 3.51 Å. In the third Sm site, Sm(3) is bonded in a 10-coordinate geometry to four equivalent Ni(1), two equivalent In(3), and four equivalent In(1) atoms. All Sm(3)-Ni(1) bond lengths are 2.95 Å. Both Sm(3)-In(3) bond lengths are 3.31 Å. All Sm(3)-In(1) bond lengths are 3.40 Å. In the fourth Sm site, Sm(4) is bonded in a 10-coordinate geometry to four equivalent Ni(1), two equivalent In(3), and four equivalent In(2) atoms. All Sm(4)-Ni(1) bond lengths are 2.94 Å. Both Sm(4)-In(3) bond lengths are 3.30 Å. All Sm(4)-In(2) bond lengths are 3.39 Å. In the fifth Sm site, Sm(5) is bonded in a distorted body-centered cubic geometry to eight equivalent In(2) atoms. All Sm(5)-In(2) bond lengths are 3.26 Å. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Sm(1), two equivalent Sm(3), two equivalent Sm(4), one In(1), one In(2), and one In(3) atom. The Ni(1)-In(1) bond length is 3.03 Å. The Ni(1)-In(2) bond length is 2.97 Å. The Ni(1)-In(3) bond length is 3.16 Å. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to two equivalent Sm(2), two equivalent Sm(3), four equivalent Sm(1), one Ni(1), and one In(1) atom. The In(1)-In(1) bond length is 3.01 Å. In the second In site, In(2) is bonded in a 10-coordinate geometry to two equivalent Sm(1), two equivalent Sm(2), two equivalent Sm(4), two equivalent Sm(5), one Ni(1), and one In(2) atom. The In(2)-In(2) bond length is 3.07 Å. In the third In site, In(3) is bonded to four equivalent Sm(3), four equivalent Sm(4), and four equivalent Ni(1) atoms to form face-sharing InSm8Ni4 cuboctahedra.