data_[Rb4Bi4Pb2O12]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.2272]
_cell_length_b [10.6295]
_cell_length_c [7.0338]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.6100]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Bi2PbO6]
_chemical_formula_sum '[Rb4 Bi4 Pb2 O12]'
_cell_volume [446.1481]
_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  0.0000  0.1685  0.0000  1.0
  Bi  Bi1  4  0.0000  0.3322  0.5000  1.0
  Pb  Pb2  2  0.0000  0.0000  0.5000  1.0
  O  O3  8  0.2095  0.1647  0.6729  1.0
  O  O4  4  0.2320  0.0000  0.3203  1.0
]