data_[Sb12O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [7.6351]
_cell_length_b [11.3953]
_cell_length_c [6.6082]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [Sb3O7]
_chemical_formula_sum '[Sb12 O28]'
_cell_volume [574.9387]
_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
[
  Sb  Sb0  8  0.2500  0.0354  0.2500  1.0
  Sb  Sb1  4  0.2500  0.2500  0.7500  1.0
  O  O2  16  0.2274  0.1085  0.5553  1.0
  O  O3  8  0.0000  0.0741  0.2171  1.0
  O  O4  4  0.0000  0.2500  0.8056  1.0
]