Ho(AuSi)2 crystallizes in the tetragonal I4/mmm space group. Ho(1) is bonded in a 16-coordinate geometry to eight equivalent Au(1) and eight equivalent Si(1) atoms. Au(1) is bonded to four equivalent Ho(1) and four equivalent Si(1) atoms to form a mixture of distorted face, corner, and edge-sharing AuHo4Si4 tetrahedra. Si(1) is bonded in a 9-coordinate geometry to four equivalent Ho(1), four equivalent Au(1), and one Si(1) atom.
Ho(AuSi)2 crystallizes in the tetragonal I4/mmm space group. Ho(1) is bonded in a 16-coordinate geometry to eight equivalent Au(1) and eight equivalent Si(1) atoms. All Ho(1)-Au(1) bond lengths are 3.30 Å. All Ho(1)-Si(1) bond lengths are 3.20 Å. Au(1) is bonded to four equivalent Ho(1) and four equivalent Si(1) atoms to form a mixture of distorted face, corner, and edge-sharing AuHo4Si4 tetrahedra. All Au(1)-Si(1) bond lengths are 2.54 Å. Si(1) is bonded in a 9-coordinate geometry to four equivalent Ho(1), four equivalent Au(1), and one Si(1) atom. The Si(1)-Si(1) bond length is 2.27 Å.