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HoHg 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 Hg atoms. All Ho–Hg bond lengths are 3.22 Å. Hg is bonded in a body-centered cubic geometry to eight equivalent Ho atoms.
HoHg2 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Ho is bonded to twelve equivalent Hg atoms to form a mixture of distorted edge and face-sharing HoHg12 cuboctahedra. All Ho–Hg bond lengths are 3.33 Å. Hg is bonded in a 9-coordinate geometry to six equivalent Ho and three equivalent Hg atoms. All Hg–Hg bond lengths are 2.86 Å.
HoHg3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ho is bonded to twelve equivalent Hg atoms to form a mixture of corner and face-sharing HoHg12 cuboctahedra. There are six shorter (3.16 Å) and six longer (3.32 Å) Ho–Hg bond lengths. Hg is bonded in a 4-coordinate geometry to four equivalent Ho atoms.
Ho3Hg is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ho is bonded to eight equivalent Ho and four equivalent Hg atoms to form distorted HoHo8Hg4 cuboctahedra that share corners with twelve equivalent HoHo8Hg4 cuboctahedra, edges with eight equivalent HgHo12 cuboctahedra, edges with sixteen equivalent HoHo8Hg4 cuboctahedra, faces with four equivalent HgHo12 cuboctahedra, and faces with fourteen equivalent HoHo8Hg4 cuboctahedra. All Ho–Ho bond lengths are 3.38 Å. All Ho–Hg bond lengths are 3.38 Å. Hg is bonded to twelve equivalent Ho atoms to form HgHo12 cuboctahedra that share corners with twelve equivalent HgHo12 cuboctahedra, edges with twenty-four equivalent HoHo8Hg4 cuboctahedra, faces with six equivalent HgHo12 cuboctahedra, and faces with twelve equivalent HoHo8Hg4 cuboctahedra.
HoHg2 crystallizes in the trigonal P-3m1 space group. The structure is two-dimensional and consists of one HoHg2 sheet oriented in the (0, 0, 1) direction. Ho is bonded in a distorted hexagonal planar geometry to six equivalent Hg atoms. All Ho–Hg bond lengths are 3.09 Å. Hg is bonded in a distorted trigonal planar geometry to three equivalent Ho atoms.
HoHg2 is Titanium Disilicide-like structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Ho is bonded in a distorted q6 geometry to ten equivalent Hg atoms. There are a spread of Ho–Hg bond distances ranging from 3.19–3.32 Å. Hg is bonded in a 10-coordinate geometry to five equivalent Ho atoms.