SmNiIn crystallizes in the hexagonal P-62m space group. Sm(1) is bonded in a 11-coordinate geometry to one Ni(2), four equivalent Ni(1), and six equivalent In(1) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(2) is bonded in a 9-coordinate geometry to three equivalent Sm(1) and six equivalent In(1) atoms. In the second Ni site, Ni(1) is bonded in a 9-coordinate geometry to six equivalent Sm(1) and three equivalent In(1) atoms. In(1) is bonded in a 10-coordinate geometry to six equivalent Sm(1), two equivalent Ni(1), and two equivalent Ni(2) atoms.
SmNiIn crystallizes in the hexagonal P-62m space group. Sm(1) is bonded in a 11-coordinate geometry to one Ni(2), four equivalent Ni(1), and six equivalent In(1) atoms. The Sm(1)-Ni(2) bond length is 3.11 Å. All Sm(1)-Ni(1) bond lengths are 2.96 Å. There are two shorter (3.17 Å) and four longer (3.32 Å) Sm(1)-In(1) bond lengths. There are two inequivalent Ni sites. In the first Ni site, Ni(2) is bonded in a 9-coordinate geometry to three equivalent Sm(1) and six equivalent In(1) atoms. All Ni(2)-In(1) bond lengths are 2.68 Å. In the second Ni site, Ni(1) is bonded in a 9-coordinate geometry to six equivalent Sm(1) and three equivalent In(1) atoms. All Ni(1)-In(1) bond lengths are 2.87 Å. In(1) is bonded in a 10-coordinate geometry to six equivalent Sm(1), two equivalent Ni(1), and two equivalent Ni(2) atoms.