data_[K4Tl4Pb4O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Tl  1.6200  1.9000  1.3325
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [20.6931]
_cell_length_b [3.5988]
_cell_length_c [6.9547]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.7939]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [KTlPbO2]
_chemical_formula_sum '[K4 Tl4 Pb4 O8]'
_cell_volume [516.1014]
_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  0.1304  0.5000  0.8015  1.0
  Tl  Tl1  4  0.2056  0.5000  0.2677  1.0
  Pb  Pb2  4  0.0574  0.0000  0.2699  1.0
  O  O3  4  0.1033  0.5000  0.4276  1.0
  O  O4  4  0.1402  0.0000  0.0920  1.0
]