data_[Al4Ag4O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Al  1.6100  1.2500  0.6750
  Ag  1.9300  1.6000  1.0867
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I-42d]
_cell_length_a [5.0214]
_cell_length_b [5.0214]
_cell_length_c [8.3163]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [122]
_chemical_formula_structural [AlAgO2]
_chemical_formula_sum '[Al4 Ag4 O8]'
_cell_volume [209.6937]
_cell_formula_units_Z [4]
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
[
  Al  Al0  4  0.0000  0.0000  0.5000  1.0
  Ag  Ag1  4  0.0000  0.0000  0.0000  1.0
  O  O2  8  0.1413  0.7500  0.6250  1.0
]