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HoRh is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ho is bonded in a body-centered cubic geometry to eight equivalent Rh atoms. All Ho–Rh bond lengths are 2.96 Å. Rh is bonded in a body-centered cubic geometry to eight equivalent Ho atoms.
Ho5Rh3 crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded in a 3-coordinate geometry to five equivalent Rh atoms. There are a spread of Ho–Rh bond distances ranging from 2.86–3.38 Å. In the second Ho site, Ho is bonded in a 6-coordinate geometry to six equivalent Rh atoms. All Ho–Rh bond lengths are 2.97 Å. Rh is bonded in a 9-coordinate geometry to nine Ho atoms.
Ho7Rh3 crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. there are three inequivalent Ho sites. In the first Ho site, Ho is bonded in a 3-coordinate geometry to three equivalent Rh atoms. All Ho–Rh bond lengths are 2.80 Å. In the second Ho site, Ho is bonded in a distorted L-shaped geometry to two equivalent Rh atoms. Both Ho–Rh bond lengths are 2.82 Å. In the third Ho site, Ho is bonded in a 3-coordinate geometry to three equivalent Rh atoms. All Ho–Rh bond lengths are 2.87 Å. Rh is bonded in a 6-coordinate geometry to six Ho atoms.