data_[Rb8Bi12Pb20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Bi  2.0200  1.6000  1.0350
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [13.7627]
_cell_length_b [15.2411]
_cell_length_c [7.7680]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Rb2Bi3Pb5]
_chemical_formula_sum '[Rb8 Bi12 Pb20]'
_cell_volume [1629.4068]
_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
[
  Rb  Rb0  8  0.2455  0.1239  0.5000  1.0
  Bi  Bi1  8  0.1366  0.3763  0.5000  1.0
  Bi  Bi2  4  0.0000  0.0000  0.2500  1.0
  Pb  Pb3  8  0.0000  0.2549  0.2500  1.0
  Pb  Pb4  8  0.1275  0.1256  0.0000  1.0
  Pb  Pb5  4  0.0000  0.5000  0.2500  1.0
]