data_[Ag4O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ag  1.9300  1.6000  1.0867
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pm]
_cell_length_a [18.4916]
_cell_length_b [5.2443]
_cell_length_c [18.4916]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [6]
_chemical_formula_structural [Ag2O]
_chemical_formula_sum '[Ag4 O2]'
_cell_volume [1552.9875]
_cell_formula_units_Z [2]
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
[
  Ag  Ag0  2  0.9366  0.2535  0.4818  1
  Ag  Ag1  1  0.0870  0.5000  0.5254  1
  Ag  Ag2  1  0.7925  0.0000  0.4408  1
  O  O3  1  0.0362  0.0000  0.5117  1
  O  O4  1  0.2111  0.5000  0.5585  1
]