data_[Rb2Li2Pb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Li  0.9800  1.4500  0.9000
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Pmma]
_cell_length_a [9.5016]
_cell_length_b [4.8039]
_cell_length_c [8.7060]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [51]
_chemical_formula_structural [RbLiPb4]
_chemical_formula_sum '[Rb2 Li2 Pb8]'
_cell_volume [397.3863]
_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  0.2500  0.0000  0.3900  1
  Li  Li1  2  0.2500  0.0000  0.8118  1
  Pb  Pb2  4  0.0751  0.5000  0.7149  1
  Pb  Pb3  2  0.0000  0.0000  0.0000  1
  Pb  Pb4  2  0.2500  0.5000  0.0468  1
]