K2O crystallizes in the tetragonal P4_2/nmc space group. There are three inequivalent K sites. In the first K site, K(1) is bonded to four equivalent O(1) atoms to form a mixture of edge and corner-sharing KO4 tetrahedra. In the second K site, K(2) is bonded to four equivalent O(1) atoms to form a mixture of edge and corner-sharing KO4 tetrahedra. In the third K site, K(3) is bonded in a linear geometry to two equivalent O(1) atoms. O(1) is bonded to one K(3), two equivalent K(2), and four equivalent K(1) atoms to form a mixture of distorted edge and corner-sharing OK7 hexagonal pyramids.
K2O crystallizes in the tetragonal P4_2/nmc space group. There are three inequivalent K sites. In the first K site, K(1) is bonded to four equivalent O(1) atoms to form a mixture of edge and corner-sharing KO4 tetrahedra. There are two shorter (2.78 Å) and two longer (2.98 Å) K(1)-O(1) bond lengths. In the second K site, K(2) is bonded to four equivalent O(1) atoms to form a mixture of edge and corner-sharing KO4 tetrahedra. There are two shorter (2.69 Å) and two longer (2.80 Å) K(2)-O(1) bond lengths. In the third K site, K(3) is bonded in a linear geometry to two equivalent O(1) atoms. Both K(3)-O(1) bond lengths are 2.50 Å. O(1) is bonded to one K(3), two equivalent K(2), and four equivalent K(1) atoms to form a mixture of distorted edge and corner-sharing OK7 hexagonal pyramids.