data_[Ca8Zn4Bi4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Zn  1.6500  1.3500  0.8800
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.3846]
_cell_length_b [13.7345]
_cell_length_c [11.1081]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Ca2ZnBiO5]
_chemical_formula_sum '[Ca8 Zn4 Bi4 O20]'
_cell_volume [516.3731]
_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
[
  Ca  Ca0  4  0.0000  0.1167  0.7188  1.0
  Ca  Ca1  4  0.0000  0.1173  0.2428  1.0
  Zn  Zn2  4  0.0000  0.4933  0.4700  1.0
  Bi  Bi3  4  0.0000  0.2356  0.0006  1.0
  O  O4  4  0.0000  0.0726  0.0272  1.0
  O  O5  4  0.0000  0.2644  0.3604  1.0
  O  O6  4  0.0000  0.2799  0.6426  1.0
  O  O7  4  0.0000  0.3861  0.0691  1.0
  O  O8  4  0.0000  0.4935  0.7925  1.0
]