The structure described by 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. is represented by the CIF file [CIF]
data_K2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.364
_cell_length_b   9.364
_cell_length_c   6.666
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   584.462
_cell_formula_units_Z   8
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  K  K0  1  0.249  0.249  0.500  1.0
  K  K1  1  0.751  0.249  0.500  1.0
  K  K2  1  0.000  0.500  0.964  1.0
  K  K3  1  0.500  0.500  0.244  1.0
  K  K4  1  0.000  0.500  0.464  1.0
  K  K5  1  0.500  0.500  0.756  1.0
  K  K6  1  0.249  0.751  0.500  1.0
  K  K7  1  0.751  0.751  0.500  1.0
  K  K8  1  0.749  0.749  0.000  1.0
  K  K9  1  0.251  0.749  0.000  1.0
  K  K10  1  0.000  0.000  0.256  1.0
  K  K11  1  0.000  0.000  0.744  1.0
  K  K12  1  0.500  0.000  0.036  1.0
  K  K13  1  0.500  0.000  0.536  1.0
  K  K14  1  0.749  0.251  0.000  1.0
  K  K15  1  0.251  0.251  0.000  1.0
  O  O16  1  0.000  0.267  0.726  1.0
  O  O17  1  0.767  0.500  0.226  1.0
  O  O18  1  0.233  0.500  0.226  1.0
  O  O19  1  0.000  0.733  0.726  1.0
  O  O20  1  0.500  0.767  0.774  1.0
  O  O21  1  0.267  0.000  0.274  1.0
  O  O22  1  0.733  0.000  0.274  1.0
  O  O23  1  0.500  0.233  0.774  1.0
[/CIF]
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The structure described by 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. is represented by the CIF file [CIF]
data_K2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.364
_cell_length_b   9.364
_cell_length_c   6.666
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   584.462
_cell_formula_units_Z   8
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  K  K0  1  0.249  0.249  0.500  1.0
  K  K1  1  0.751  0.249  0.500  1.0
  K  K2  1  0.000  0.500  0.964  1.0
  K  K3  1  0.500  0.500  0.244  1.0
  K  K4  1  0.000  0.500  0.464  1.0
  K  K5  1  0.500  0.500  0.756  1.0
  K  K6  1  0.249  0.751  0.500  1.0
  K  K7  1  0.751  0.751  0.500  1.0
  K  K8  1  0.749  0.749  0.000  1.0
  K  K9  1  0.251  0.749  0.000  1.0
  K  K10  1  0.000  0.000  0.256  1.0
  K  K11  1  0.000  0.000  0.744  1.0
  K  K12  1  0.500  0.000  0.036  1.0
  K  K13  1  0.500  0.000  0.536  1.0
  K  K14  1  0.749  0.251  0.000  1.0
  K  K15  1  0.251  0.251  0.000  1.0
  O  O16  1  0.000  0.267  0.726  1.0
  O  O17  1  0.767  0.500  0.226  1.0
  O  O18  1  0.233  0.500  0.226  1.0
  O  O19  1  0.000  0.733  0.726  1.0
  O  O20  1  0.500  0.767  0.774  1.0
  O  O21  1  0.267  0.000  0.274  1.0
  O  O22  1  0.733  0.000  0.274  1.0
  O  O23  1  0.500  0.233  0.774  1.0
[/CIF]
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