data_[Na4Bi8Au4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Bi  2.0200  1.6000  1.0350
  Au  2.5400  1.3500  1.0700
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [12.3443]
_cell_length_b [12.3443]
_cell_length_c [3.6307]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [NaBi2AuO5]
_chemical_formula_sum '[Na4 Bi8 Au4 O20]'
_cell_volume [553.2497]
_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
[
  Na  Na0  4  0.1999  0.6999  0.5000  1
  Bi  Bi1  8  0.0488  0.2309  0.0000  1
  Au  Au2  2  0.0000  0.0000  0.5000  1
  Au  Au3  2  0.0000  0.5000  0.5000  1
  O  O4  8  0.0047  0.6631  0.5000  1
  O  O5  8  0.1156  0.8826  0.5000  1
  O  O6  4  0.2122  0.2878  0.0000  1
]