data_[Rb4Tl12Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tl  1.6200  1.9000  1.3325
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.9248]
_cell_length_b [7.1827]
_cell_length_c [7.1655]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.2865]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Tl6Pb]
_chemical_formula_sum '[Rb4 Tl12 Pb2]'
_cell_volume [664.1076]
_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  0.1704  0.5000  0.1370  1.0
  Tl  Tl1  8  0.0812  0.2626  0.6685  1.0
  Tl  Tl2  4  0.1796  0.0000  0.3613  1.0
  Pb  Pb3  2  0.0000  0.0000  0.0000  1.0
]