data_[Rb2Na10Pb4]
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 [Immm]
_cell_length_a [4.5575]
_cell_length_b [10.4419]
_cell_length_c [13.0970]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [RbNa5Pb2]
_chemical_formula_sum '[Rb2 Na10 Pb4]'
_cell_volume [623.2675]
_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  2  0.0000  0.0000  0.0000  1.0
  Na  Na1  8  0.0000  0.1991  0.3386  1.0
  Na  Na2  2  0.0000  0.5000  0.0000  1.0
  Pb  Pb3  4  0.0000  0.5000  0.2511  1.0
]