Materials Data on HoNiAs by Materials Project
HoNiAs is hexagonal omega structure-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded to six equivalent Ni and six equivalent As atoms to form a mixture of edge and face-sharing HoNi6As6 cuboctahedra. All Ho–Ni bond lengths are 2.93 Å. All Ho–As bond lengths are 3.07 Å. In the second Ho site, Ho is bonded to six equivalent Ni and six equivalent As atoms to form a mixture of edge and face-sharing HoNi6As6 cuboctahedra. All Ho–Ni bond lengths are 3.13 Å. All Ho–As bond lengths are 2.98 Å. Ni is bonded in a 3-coordinate geometry to six Ho and three equivalent As atoms. All Ni–As bond lengths are 2.34 Å. As is bonded in a 3-coordinate geometry to six Ho and three equivalent Ni atoms.