Zn(NiO2)2 is Spinel structured and crystallizes in the tetragonal I4_1/amd 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 56-60°. O(1) is bonded to three equivalent Ni(1) and one Zn(1) atom to form a mixture of distorted corner and edge-sharing OZnNi3 trigonal pyramids.
Zn(NiO2)2 is Spinel structured and crystallizes in the tetragonal I4_1/amd 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 four shorter (1.90 Å) and two longer (2.07 Å) Ni(1)-O(1) bond lengths. 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 56-60°. All Zn(1)-O(1) bond lengths are 1.95 Å. O(1) is bonded to three equivalent Ni(1) and one Zn(1) atom to form a mixture of distorted corner and edge-sharing OZnNi3 trigonal pyramids.