data_[K4Sb12O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [6.8267]
_cell_length_b [13.7628]
_cell_length_c [7.7204]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.7853]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [KSb3O5]
_chemical_formula_sum '[K4 Sb12 O20]'
_cell_volume [635.7342]
_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
[
  K  K0  4  0.0427  0.7484  0.4603  1
  Sb  Sb1  4  0.0091  0.5080  0.7205  1
  Sb  Sb2  4  0.4678  0.0998  0.1359  1
  Sb  Sb3  4  0.4905  0.1372  0.5884  1
  O  O4  4  0.1836  0.1296  0.8802  1
  O  O5  4  0.1973  0.5446  0.5933  1
  O  O6  4  0.2648  0.5875  0.9567  1
  O  O7  4  0.3181  0.1498  0.2881  1
  O  O8  4  0.3799  0.7287  0.3554  1
]