data_[Cd8Sb8O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cd  1.6900  1.5500  1.0900
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [7.2622]
_cell_length_b [10.2469]
_cell_length_c [7.3945]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [Cd2Sb2O7]
_chemical_formula_sum '[Cd8 Sb8 O28]'
_cell_volume [550.2609]
_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
[
  Cd  Cd0  4  0.0000  0.0000  0.5000  1
  Cd  Cd1  4  0.2500  0.2500  0.7500  1
  Sb  Sb2  4  0.0000  0.0000  0.0000  1
  Sb  Sb3  4  0.2500  0.2500  0.2500  1
  O  O4  16  0.2079  0.1177  0.0618  1
  O  O5  8  0.0000  0.0976  0.7626  1
  O  O6  4  0.0000  0.2500  0.3505  1
]