data_[Rb12Na4Pb4]
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 [P2/c]
_cell_length_a [10.1675]
_cell_length_b [7.9225]
_cell_length_c [14.3195]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.0657]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [Rb3NaPb]
_chemical_formula_sum '[Rb12 Na4 Pb4]'
_cell_volume [1139.0570]
_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  0.0060  0.2403  0.6078  1
  Rb  Rb1  4  0.2273  0.3056  0.3199  1
  Rb  Rb2  4  0.3637  0.0924  0.0747  1
  Na  Na3  4  0.4128  0.4079  0.6098  1
  Pb  Pb4  4  0.3373  0.1959  0.7909  1
]