data_[Rb16Sb4O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [21.2622]
_cell_length_b [6.2707]
_cell_length_c [7.6559]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.9485]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb8Sb2O]
_chemical_formula_sum '[Rb16 Sb4 O2]'
_cell_volume [953.2910]
_cell_formula_units_Z [2]
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
[
  Rb  Rb0  4  0.0040  0.0000  0.2368  1
  Rb  Rb1  4  0.0942  0.5000  0.8283  1
  Rb  Rb2  4  0.1220  0.5000  0.3261  1
  Rb  Rb3  4  0.2292  0.0000  0.2038  1
  Sb  Sb4  4  0.1570  0.0000  0.6520  1
  O  O5  2  0.0000  0.5000  0.0000  1
]