data_[Ba4Ac4Bi4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Ac  1.1000  1.9500  1.2600
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [7.3637]
_cell_length_b [7.7171]
_cell_length_c [10.4996]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [BaAcBiO4]
_chemical_formula_sum '[Ba4 Ac4 Bi4 O16]'
_cell_volume [596.6504]
_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
[
  Ba  Ba0  4  0.0000  0.2500  0.8762  1
  Ac  Ac1  4  0.0000  0.0000  0.5000  1
  Bi  Bi2  4  0.2500  0.2500  0.2500  1
  O  O3  8  0.0000  0.0372  0.2608  1
  O  O4  8  0.2185  0.2500  0.4808  1
]