Zn(NiO2)2 is Spinel structured and crystallizes in the tetragonal I4_1/a space group. Ni(1) is bonded to six equivalent O(1) atoms to form NiO6 octahedra that share corners with six equivalent Zn(1)O4 tetrahedra and edges with six equivalent Ni(1)O6 octahedra. Zn(1) is bonded to four equivalent O(1) atoms to form ZnO4 tetrahedra that share corners with twelve equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-64°. O(1) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Ni(1) and one Zn(1) atom.
Zn(NiO2)2 is Spinel structured and crystallizes in the tetragonal I4_1/a space group. Ni(1) is bonded to six equivalent O(1) atoms to form NiO6 octahedra that share corners with six equivalent Zn(1)O4 tetrahedra and edges with six equivalent Ni(1)O6 octahedra. There are a spread of Ni(1)-O(1) bond distances ranging from 1.88-2.07 Å. Zn(1) is bonded to four equivalent O(1) atoms to form ZnO4 tetrahedra that share corners with twelve equivalent Ni(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-64°. All Zn(1)-O(1) bond lengths are 1.96 Å. O(1) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Ni(1) and one Zn(1) atom.