K5Br4Cl is Caswellsilverite-like structured and crystallizes in the tetragonal I4/m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to five equivalent Br(1) and one Cl(1) atom to form KBr5Cl octahedra that share  a cornercorner with one K(2)Br4Cl2 octahedra, corners with five equivalent K(1)Br5Cl octahedra, edges with three equivalent K(2)Br4Cl2 octahedra, and edges with nine equivalent K(1)Br5Cl octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second K site, K(2) is bonded to four equivalent Br(1) and two equivalent Cl(1) atoms to form KBr4Cl2 octahedra that share corners with two equivalent K(2)Br4Cl2 octahedra, corners with four equivalent K(1)Br5Cl octahedra, and edges with twelve equivalent K(1)Br5Cl octahedra. The corner-sharing octahedral tilt angles range from 0-2°. Br(1) is bonded to one K(2) and five equivalent K(1) atoms to form BrK6 octahedra that share  a cornercorner with one Cl(1)K6 octahedra, corners with five equivalent Br(1)K6 octahedra, edges with three equivalent Cl(1)K6 octahedra, and edges with nine equivalent Br(1)K6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. Cl(1) is bonded to two equivalent K(2) and four equivalent K(1) atoms to form ClK6 octahedra that share corners with two equivalent Cl(1)K6 octahedra, corners with four equivalent Br(1)K6 octahedra, and edges with twelve equivalent Br(1)K6 octahedra. The corner-sharing octahedra are not tilted.
K5Br4Cl is Caswellsilverite-like structured and crystallizes in the tetragonal I4/m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to five equivalent Br(1) and one Cl(1) atom to form KBr5Cl octahedra that share  a cornercorner with one K(2)Br4Cl2 octahedra, corners with five equivalent K(1)Br5Cl octahedra, edges with three equivalent K(2)Br4Cl2 octahedra, and edges with nine equivalent K(1)Br5Cl octahedra. The corner-sharing octahedral tilt angles range from 0-3°. There are a spread of K(1)-Br(1) bond distances ranging from 3.28-3.35 Å. The K(1)-Cl(1) bond length is 3.19 Å. In the second K site, K(2) is bonded to four equivalent Br(1) and two equivalent Cl(1) atoms to form KBr4Cl2 octahedra that share corners with two equivalent K(2)Br4Cl2 octahedra, corners with four equivalent K(1)Br5Cl octahedra, and edges with twelve equivalent K(1)Br5Cl octahedra. The corner-sharing octahedral tilt angles range from 0-2°. All K(2)-Br(1) bond lengths are 3.27 Å. Both K(2)-Cl(1) bond lengths are 3.28 Å. Br(1) is bonded to one K(2) and five equivalent K(1) atoms to form BrK6 octahedra that share  a cornercorner with one Cl(1)K6 octahedra, corners with five equivalent Br(1)K6 octahedra, edges with three equivalent Cl(1)K6 octahedra, and edges with nine equivalent Br(1)K6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. Cl(1) is bonded to two equivalent K(2) and four equivalent K(1) atoms to form ClK6 octahedra that share corners with two equivalent Cl(1)K6 octahedra, corners with four equivalent Br(1)K6 octahedra, and edges with twelve equivalent Br(1)K6 octahedra. The corner-sharing octahedra are not tilted.