data_[Rb8As8Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  As  2.1800  1.1500  0.6600
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.5742]
_cell_length_b [5.6206]
_cell_length_c [11.3423]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.6815]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2As2Pb]
_chemical_formula_sum '[Rb8 As8 Pb4]'
_cell_volume [689.3941]
_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  4  0.0227  0.5000  0.6913  1
  Rb  Rb1  4  0.1812  0.5000  0.1015  1
  As  As2  4  0.0208  0.0000  0.9024  1
  As  As3  4  0.1163  0.0000  0.5492  1
  Pb  Pb4  4  0.2082  0.0000  0.3603  1
]