Ni4ZnO5 is Caswellsilverite-like structured and crystallizes in the tetragonal I4/m space group. Ni(1) is bonded to one O(1) and five O(2,2) atoms to form NiO6 octahedra that share  a cornercorner with one Zn(1)O6 octahedra, corners with five equivalent Ni(1)O6 octahedra, edges with three equivalent Zn(1)O6 octahedra, and edges with nine equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. Zn(1) is bonded to two equivalent O(1) and four O(2,2) atoms to form ZnO6 octahedra that share corners with two equivalent Zn(1)O6 octahedra, corners with four equivalent Ni(1)O6 octahedra, and edges with twelve equivalent Ni(1)O6 octahedra. The corner-sharing octahedra are not tilted. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ni(1) and two equivalent Zn(1) atoms to form OZn2Ni4 octahedra that share corners with two equivalent O(1)Zn2Ni4 octahedra; corners with four O(2,2)ZnNi5 octahedra; and edges with twelve O(2,2,2)ZnNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second O site, O(2) is bonded to five equivalent Ni(1) and one Zn(1) atom to form OZnNi5 octahedra that share  a cornercorner with one O(1)Zn2Ni4 octahedra; corners with five O(2,2)ZnNi5 octahedra; edges with three equivalent O(1)Zn2Ni4 octahedra; and edges with nine O(2,2,2)ZnNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the third O site, O(2) is bonded to five equivalent Ni(1) and one Zn(1) atom to form OZnNi5 octahedra that share  a cornercorner with one O(1)Zn2Ni4 octahedra; corners with five O(2,2)ZnNi5 octahedra; edges with three equivalent O(1)Zn2Ni4 octahedra; and edges with nine O(2,2,2)ZnNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fourth O site, O(2) is bonded to five equivalent Ni(1) and one Zn(1) atom to form OZnNi5 octahedra that share  a cornercorner with one O(1)Zn2Ni4 octahedra; corners with five O(2,2)ZnNi5 octahedra; edges with three equivalent O(1)Zn2Ni4 octahedra; and edges with nine O(2,2,2)ZnNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-1°.
Ni4ZnO5 is Caswellsilverite-like structured and crystallizes in the tetragonal I4/m space group. Ni(1) is bonded to one O(1) and five O(2,2) atoms to form NiO6 octahedra that share  a cornercorner with one Zn(1)O6 octahedra, corners with five equivalent Ni(1)O6 octahedra, edges with three equivalent Zn(1)O6 octahedra, and edges with nine equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. The Ni(1)-O(1) bond length is 2.13 Å. There are a spread of Ni(1)-O(2,2) bond distances ranging from 2.10-2.13 Å. Zn(1) is bonded to two equivalent O(1) and four O(2,2) atoms to form ZnO6 octahedra that share corners with two equivalent Zn(1)O6 octahedra, corners with four equivalent Ni(1)O6 octahedra, and edges with twelve equivalent Ni(1)O6 octahedra. The corner-sharing octahedra are not tilted. Both Zn(1)-O(1) bond lengths are 2.13 Å. All Zn(1)-O(2,2) bond lengths are 2.15 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ni(1) and two equivalent Zn(1) atoms to form OZn2Ni4 octahedra that share corners with two equivalent O(1)Zn2Ni4 octahedra; corners with four O(2,2)ZnNi5 octahedra; and edges with twelve O(2,2,2)ZnNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second O site, O(2) is bonded to five equivalent Ni(1) and one Zn(1) atom to form OZnNi5 octahedra that share  a cornercorner with one O(1)Zn2Ni4 octahedra; corners with five O(2,2)ZnNi5 octahedra; edges with three equivalent O(1)Zn2Ni4 octahedra; and edges with nine O(2,2,2)ZnNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are a spread of O(2)-Ni(1) bond distances ranging from 2.10-2.13 Å. In the third O site, O(2) is bonded to five equivalent Ni(1) and one Zn(1) atom to form OZnNi5 octahedra that share  a cornercorner with one O(1)Zn2Ni4 octahedra; corners with five O(2,2)ZnNi5 octahedra; edges with three equivalent O(1)Zn2Ni4 octahedra; and edges with nine O(2,2,2)ZnNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the fourth O site, O(2) is bonded to five equivalent Ni(1) and one Zn(1) atom to form OZnNi5 octahedra that share  a cornercorner with one O(1)Zn2Ni4 octahedra; corners with five O(2,2)ZnNi5 octahedra; edges with three equivalent O(1)Zn2Ni4 octahedra; and edges with nine O(2,2,2)ZnNi5 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. The O(2)-Zn(1) bond length is 2.15 Å.