KNa2CuO2 crystallizes in the tetragonal I4mm space group. K(1) is bonded in a 1-coordinate geometry to one O(2) atom. Na(1) is bonded in a distorted see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Cu(1) is bonded in a linear geometry to one O(1) and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to four equivalent Na(1) and one Cu(1) atom. In the second O site, O(2) is bonded in a 6-coordinate geometry to one K(1), four equivalent Na(1), and one Cu(1) atom.
KNa2CuO2 crystallizes in the tetragonal I4mm space group. K(1) is bonded in a 1-coordinate geometry to one O(2) atom. The K(1)-O(2) bond length is 2.82 Å. Na(1) is bonded in a distorted see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Na(1)-O(1) bond lengths are 2.51 Å. Both Na(1)-O(2) bond lengths are 2.28 Å. Cu(1) is bonded in a linear geometry to one O(1) and one O(2) atom. The Cu(1)-O(1) bond length is 1.82 Å. The Cu(1)-O(2) bond length is 1.81 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to four equivalent Na(1) and one Cu(1) atom. In the second O site, O(2) is bonded in a 6-coordinate geometry to one K(1), four equivalent Na(1), and one Cu(1) atom.