RbNa2NiO2 crystallizes in the tetragonal I4/mmm space group. Rb(1) is bonded to four equivalent Ni(1) and two equivalent O(1) atoms to form a mixture of distorted corner and edge-sharing RbNi4O2 octahedra. The corner-sharing octahedra are not tilted. Na(1) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. Ni(1) is bonded in a linear geometry to four equivalent Rb(1) and two equivalent O(1) atoms. O(1) is bonded in a 5-coordinate geometry to one Rb(1), four equivalent Na(1), and one Ni(1) atom.
RbNa2NiO2 crystallizes in the tetragonal I4/mmm space group. Rb(1) is bonded to four equivalent Ni(1) and two equivalent O(1) atoms to form a mixture of distorted corner and edge-sharing RbNi4O2 octahedra. The corner-sharing octahedra are not tilted. All Rb(1)-Ni(1) bond lengths are 3.29 Å. Both Rb(1)-O(1) bond lengths are 3.08 Å. Na(1) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. All Na(1)-O(1) bond lengths are 2.41 Å. Ni(1) is bonded in a linear geometry to four equivalent Rb(1) and two equivalent O(1) atoms. Both Ni(1)-O(1) bond lengths are 1.78 Å. O(1) is bonded in a 5-coordinate geometry to one Rb(1), four equivalent Na(1), and one Ni(1) atom.