SmNiIn is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to two equivalent Ni(1), four equivalent Ni(2), two equivalent In(1), and four equivalent In(2) atoms to form a mixture of edge and face-sharing SmIn6Ni6 cuboctahedra. In the second Sm site, Sm(2) is bonded to two equivalent Ni(1), four equivalent Ni(2), two equivalent In(1), and four equivalent In(2) atoms to form a mixture of edge and face-sharing SmIn6Ni6 cuboctahedra. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one In(1), and two equivalent In(2) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one In(1), and two equivalent In(2) atoms. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one Ni(1), and two equivalent Ni(2) atoms. In the second In site, In(2) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one Ni(1), and two equivalent Ni(2) atoms.
SmNiIn is hexagonal omega structure-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to two equivalent Ni(1), four equivalent Ni(2), two equivalent In(1), and four equivalent In(2) atoms to form a mixture of edge and face-sharing SmIn6Ni6 cuboctahedra. Both Sm(1)-Ni(1) bond lengths are 3.27 Å. All Sm(1)-Ni(2) bond lengths are 3.19 Å. Both Sm(1)-In(1) bond lengths are 3.22 Å. All Sm(1)-In(2) bond lengths are 3.22 Å. In the second Sm site, Sm(2) is bonded to two equivalent Ni(1), four equivalent Ni(2), two equivalent In(1), and four equivalent In(2) atoms to form a mixture of edge and face-sharing SmIn6Ni6 cuboctahedra. Both Sm(2)-Ni(1) bond lengths are 3.22 Å. There are two shorter (3.19 Å) and two longer (3.24 Å) Sm(2)-Ni(2) bond lengths. Both Sm(2)-In(1) bond lengths are 3.22 Å. There are two shorter (3.21 Å) and two longer (3.22 Å) Sm(2)-In(2) bond lengths. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one In(1), and two equivalent In(2) atoms. The Ni(1)-In(1) bond length is 2.63 Å. Both Ni(1)-In(2) bond lengths are 2.63 Å. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one In(1), and two equivalent In(2) atoms. The Ni(2)-In(1) bond length is 2.66 Å. There is one shorter (2.65 Å) and one longer (2.66 Å) Ni(2)-In(2) bond length. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one Ni(1), and two equivalent Ni(2) atoms. In the second In site, In(2) is bonded in a 9-coordinate geometry to two equivalent Sm(1), four equivalent Sm(2), one Ni(1), and two equivalent Ni(2) atoms.