The material described by Na2O2 is alpha-derived structured and crystallizes in the orthorhombic Cmcm space group. Na(1) is bonded in a 7-coordinate geometry to seven equivalent O(1) atoms. O(1) is bonded to seven equivalent Na(1) atoms to form a mixture of distorted edge, corner, and face-sharing ONa7 pentagonal bipyramids. is represented by the CIF file [CIF]
data_Na2O2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.628
_cell_length_b   4.628
_cell_length_c   3.518
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   137.727
_symmetry_Int_Tables_number   1
_cell_volume   50.675
_cell_formula_units_Z   1
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
  Na  Na0  1  0.123  0.877  0.750  1.0
  Na  Na1  1  0.877  0.123  0.250  1.0
  O  O2  1  0.406  0.594  0.750  1.0
  O  O3  1  0.594  0.406  0.250  1.0
[/CIF]
.
The material described by Na2O2 is alpha-derived structured and crystallizes in the orthorhombic Cmcm space group. Na(1) is bonded in a 7-coordinate geometry to seven equivalent O(1) atoms. O(1) is bonded to seven equivalent Na(1) atoms to form a mixture of distorted edge, corner, and face-sharing ONa7 pentagonal bipyramids. is represented by the CIF file [CIF]
data_Na2O2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.628
_cell_length_b   4.628
_cell_length_c   3.518
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   137.727
_symmetry_Int_Tables_number   1
_cell_volume   50.675
_cell_formula_units_Z   1
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
  Na  Na0  1  0.123  0.877  0.750  1.0
  Na  Na1  1  0.877  0.123  0.250  1.0
  O  O2  1  0.406  0.594  0.750  1.0
  O  O3  1  0.594  0.406  0.250  1.0
[/CIF]
.