Ho(CuS)2 crystallizes in the trigonal P-3m1 space group. Ho(1) is bonded to six equivalent S(1) atoms to form distorted HoS6 octahedra that share corners with twelve equivalent Cu(1)S4 tetrahedra, edges with six equivalent Ho(1)S6 octahedra, and edges with six equivalent Cu(1)S4 tetrahedra. Cu(1) is bonded to four equivalent S(1) atoms to form distorted CuS4 tetrahedra that share corners with six equivalent Ho(1)S6 octahedra, corners with six equivalent Cu(1)S4 tetrahedra, edges with three equivalent Ho(1)S6 octahedra, and edges with three equivalent Cu(1)S4 tetrahedra. The corner-sharing octahedral tilt angles range from 24-54°. S(1) is bonded in a 7-coordinate geometry to three equivalent Ho(1) and four equivalent Cu(1) atoms.
Ho(CuS)2 crystallizes in the trigonal P-3m1 space group. Ho(1) is bonded to six equivalent S(1) atoms to form distorted HoS6 octahedra that share corners with twelve equivalent Cu(1)S4 tetrahedra, edges with six equivalent Ho(1)S6 octahedra, and edges with six equivalent Cu(1)S4 tetrahedra. All Ho(1)-S(1) bond lengths are 2.82 Å. Cu(1) is bonded to four equivalent S(1) atoms to form distorted CuS4 tetrahedra that share corners with six equivalent Ho(1)S6 octahedra, corners with six equivalent Cu(1)S4 tetrahedra, edges with three equivalent Ho(1)S6 octahedra, and edges with three equivalent Cu(1)S4 tetrahedra. The corner-sharing octahedral tilt angles range from 24-54°. There are three shorter (2.33 Å) and one longer (2.49 Å) Cu(1)-S(1) bond length. S(1) is bonded in a 7-coordinate geometry to three equivalent Ho(1) and four equivalent Cu(1) atoms.