SmNiP is hexagonal omega structure-derived structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to six equivalent Ni(1) and six equivalent P(1) atoms to form a mixture of edge and face-sharing SmNi6P6 cuboctahedra. In the second Sm site, Sm(2) is bonded to six equivalent Ni(1) and six equivalent P(1) atoms to form a mixture of edge and face-sharing SmNi6P6 cuboctahedra. Ni(1) is bonded in a distorted trigonal planar geometry to three equivalent Sm(1), three equivalent Sm(2), and three equivalent P(1) atoms. P(1) is bonded in a 9-coordinate geometry to three equivalent Sm(1), three equivalent Sm(2), and three equivalent Ni(1) atoms.
SmNiP is hexagonal omega structure-derived structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to six equivalent Ni(1) and six equivalent P(1) atoms to form a mixture of edge and face-sharing SmNi6P6 cuboctahedra. All Sm(1)-Ni(1) bond lengths are 3.03 Å. All Sm(1)-P(1) bond lengths are 3.01 Å. In the second Sm site, Sm(2) is bonded to six equivalent Ni(1) and six equivalent P(1) atoms to form a mixture of edge and face-sharing SmNi6P6 cuboctahedra. All Sm(2)-Ni(1) bond lengths are 3.00 Å. All Sm(2)-P(1) bond lengths are 3.02 Å. Ni(1) is bonded in a distorted trigonal planar geometry to three equivalent Sm(1), three equivalent Sm(2), and three equivalent P(1) atoms. All Ni(1)-P(1) bond lengths are 2.27 Å. P(1) is bonded in a 9-coordinate geometry to three equivalent Sm(1), three equivalent Sm(2), and three equivalent Ni(1) atoms.