AgHoSe2 is Caswellsilverite-like structured and crystallizes in the triclinic P1 space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to one Se(3), one Se(4), two equivalent Se(1), and two equivalent Se(2) atoms to form HoSe6 octahedra that share corners with two equivalent Ag(2)Se6 octahedra, corners with four equivalent Ho(1)Se6 octahedra, edges with four equivalent Ho(2)Se6 octahedra, edges with four equivalent Ag(1)Se6 octahedra, and edges with four equivalent Ag(2)Se6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. In the second Ho site, Ho(2) is bonded to one Se(1), one Se(2), two equivalent Se(3), and two equivalent Se(4) atoms to form HoSe6 octahedra that share corners with two equivalent Ag(1)Se6 octahedra, corners with four equivalent Ho(2)Se6 octahedra, edges with four equivalent Ho(1)Se6 octahedra, edges with four equivalent Ag(1)Se6 octahedra, and edges with four equivalent Ag(2)Se6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one Se(1), one Se(2), two equivalent Se(3), and two equivalent Se(4) atoms to form AgSe6 octahedra that share corners with two equivalent Ho(2)Se6 octahedra, corners with four equivalent Ag(1)Se6 octahedra, edges with four equivalent Ho(1)Se6 octahedra, edges with four equivalent Ho(2)Se6 octahedra, and edges with four equivalent Ag(2)Se6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. In the second Ag site, Ag(2) is bonded to one Se(3), one Se(4), two equivalent Se(1), and two equivalent Se(2) atoms to form AgSe6 octahedra that share corners with two equivalent Ho(1)Se6 octahedra, corners with four equivalent Ag(2)Se6 octahedra, edges with four equivalent Ho(1)Se6 octahedra, edges with four equivalent Ho(2)Se6 octahedra, and edges with four equivalent Ag(1)Se6 octahedra. The corner-sharing octahedral tilt angles range from 1-8°. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded to one Ho(2), two equivalent Ho(1), one Ag(1), and two equivalent Ag(2) atoms to form a mixture of corner and edge-sharing SeHo3Ag3 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. In the second Se site, Se(2) is bonded to one Ho(2), two equivalent Ho(1), one Ag(1), and two equivalent Ag(2) atoms to form a mixture of corner and edge-sharing SeHo3Ag3 octahedra. The corner-sharing octahedral tilt angles range from 1-8°. In the third Se site, Se(3) is bonded to one Ho(1), two equivalent Ho(2), one Ag(2), and two equivalent Ag(1) atoms to form a mixture of corner and edge-sharing SeHo3Ag3 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the fourth Se site, Se(4) is bonded to one Ho(1), two equivalent Ho(2), one Ag(2), and two equivalent Ag(1) atoms to form a mixture of corner and edge-sharing SeHo3Ag3 octahedra. The corner-sharing octahedral tilt angles range from 0-7°.
AgHoSe2 is Caswellsilverite-like structured and crystallizes in the triclinic P1 space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to one Se(3), one Se(4), two equivalent Se(1), and two equivalent Se(2) atoms to form HoSe6 octahedra that share corners with two equivalent Ag(2)Se6 octahedra, corners with four equivalent Ho(1)Se6 octahedra, edges with four equivalent Ho(2)Se6 octahedra, edges with four equivalent Ag(1)Se6 octahedra, and edges with four equivalent Ag(2)Se6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. The Ho(1)-Se(3) bond length is 2.86 Å. The Ho(1)-Se(4) bond length is 2.86 Å. There is one shorter (2.85 Å) and one longer (2.87 Å) Ho(1)-Se(1) bond length. There is one shorter (2.85 Å) and one longer (2.86 Å) Ho(1)-Se(2) bond length. In the second Ho site, Ho(2) is bonded to one Se(1), one Se(2), two equivalent Se(3), and two equivalent Se(4) atoms to form HoSe6 octahedra that share corners with two equivalent Ag(1)Se6 octahedra, corners with four equivalent Ho(2)Se6 octahedra, edges with four equivalent Ho(1)Se6 octahedra, edges with four equivalent Ag(1)Se6 octahedra, and edges with four equivalent Ag(2)Se6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. The Ho(2)-Se(1) bond length is 2.86 Å. The Ho(2)-Se(2) bond length is 2.86 Å. There is one shorter (2.85 Å) and one longer (2.86 Å) Ho(2)-Se(3) bond length. Both Ho(2)-Se(4) bond lengths are 2.86 Å. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one Se(1), one Se(2), two equivalent Se(3), and two equivalent Se(4) atoms to form AgSe6 octahedra that share corners with two equivalent Ho(2)Se6 octahedra, corners with four equivalent Ag(1)Se6 octahedra, edges with four equivalent Ho(1)Se6 octahedra, edges with four equivalent Ho(2)Se6 octahedra, and edges with four equivalent Ag(2)Se6 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. The Ag(1)-Se(1) bond length is 3.19 Å. The Ag(1)-Se(2) bond length is 3.19 Å. There is one shorter (2.85 Å) and one longer (2.87 Å) Ag(1)-Se(3) bond length. There is one shorter (2.85 Å) and one longer (2.87 Å) Ag(1)-Se(4) bond length. In the second Ag site, Ag(2) is bonded to one Se(3), one Se(4), two equivalent Se(1), and two equivalent Se(2) atoms to form AgSe6 octahedra that share corners with two equivalent Ho(1)Se6 octahedra, corners with four equivalent Ag(2)Se6 octahedra, edges with four equivalent Ho(1)Se6 octahedra, edges with four equivalent Ho(2)Se6 octahedra, and edges with four equivalent Ag(1)Se6 octahedra. The corner-sharing octahedral tilt angles range from 1-8°. The Ag(2)-Se(3) bond length is 3.17 Å. The Ag(2)-Se(4) bond length is 3.21 Å. Both Ag(2)-Se(1) bond lengths are 2.86 Å. There is one shorter (2.83 Å) and one longer (2.89 Å) Ag(2)-Se(2) bond length. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded to one Ho(2), two equivalent Ho(1), one Ag(1), and two equivalent Ag(2) atoms to form a mixture of corner and edge-sharing SeHo3Ag3 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. In the second Se site, Se(2) is bonded to one Ho(2), two equivalent Ho(1), one Ag(1), and two equivalent Ag(2) atoms to form a mixture of corner and edge-sharing SeHo3Ag3 octahedra. The corner-sharing octahedral tilt angles range from 1-8°. In the third Se site, Se(3) is bonded to one Ho(1), two equivalent Ho(2), one Ag(2), and two equivalent Ag(1) atoms to form a mixture of corner and edge-sharing SeHo3Ag3 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the fourth Se site, Se(4) is bonded to one Ho(1), two equivalent Ho(2), one Ag(2), and two equivalent Ag(1) atoms to form a mixture of corner and edge-sharing SeHo3Ag3 octahedra. The corner-sharing octahedral tilt angles range from 0-7°.