data_[Rb6Na8Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.8646]
_cell_length_b [5.5544]
_cell_length_c [11.0599]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.3114]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb3(Na2Pb)2]
_chemical_formula_sum '[Rb6 Na8 Pb4]'
_cell_volume [813.1432]
_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  0.1242  0.5000  0.3781  1.0
  Rb  Rb1  2  0.0000  0.0000  0.0000  1.0
  Na  Na2  4  0.0966  0.0000  0.6676  1.0
  Na  Na3  4  0.2165  0.5000  0.0593  1.0
  Pb  Pb4  4  0.2104  0.5000  0.7599  1.0
]