Sm2NiIn3 crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 12-coordinate geometry to two equivalent Ni(1), two equivalent In(3), four equivalent In(1), and four equivalent In(2) atoms. In the second Sm site, Sm(2) is bonded to four equivalent Ni(1), two equivalent In(1), two equivalent In(2), and four equivalent In(3) atoms to form a mixture of edge and face-sharing SmIn8Ni4 cuboctahedra. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one In(3), and two equivalent In(2) atoms. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 9-coordinate geometry to two equivalent Sm(2), four equivalent Sm(1), one In(2), and two equivalent In(3) atoms. In the second In site, In(2) is bonded in a 9-coordinate geometry to two equivalent Sm(2), four equivalent Sm(1), two equivalent Ni(1), and one In(1) atom. In the third In site, In(3) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one Ni(1), and two equivalent In(1) atoms.
Sm2NiIn3 crystallizes in the orthorhombic Pmm2 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 12-coordinate geometry to two equivalent Ni(1), two equivalent In(3), four equivalent In(1), and four equivalent In(2) atoms. Both Sm(1)-Ni(1) bond lengths are 3.08 Å. Both Sm(1)-In(3) bond lengths are 3.69 Å. All Sm(1)-In(1) bond lengths are 3.43 Å. All Sm(1)-In(2) bond lengths are 3.29 Å. In the second Sm site, Sm(2) is bonded to four equivalent Ni(1), two equivalent In(1), two equivalent In(2), and four equivalent In(3) atoms to form a mixture of edge and face-sharing SmIn8Ni4 cuboctahedra. All Sm(2)-Ni(1) bond lengths are 3.32 Å. Both Sm(2)-In(1) bond lengths are 3.44 Å. Both Sm(2)-In(2) bond lengths are 3.13 Å. All Sm(2)-In(3) bond lengths are 3.31 Å. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one In(3), and two equivalent In(2) atoms. The Ni(1)-In(3) bond length is 2.63 Å. Both Ni(1)-In(2) bond lengths are 2.66 Å. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 9-coordinate geometry to two equivalent Sm(2), four equivalent Sm(1), one In(2), and two equivalent In(3) atoms. The In(1)-In(2) bond length is 2.87 Å. Both In(1)-In(3) bond lengths are 2.86 Å. In the second In site, In(2) is bonded in a 9-coordinate geometry to two equivalent Sm(2), four equivalent Sm(1), two equivalent Ni(1), and one In(1) atom. In the third In site, In(3) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one Ni(1), and two equivalent In(1) atoms.