data_[Rb8Sr4Sb8Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sr  0.9500  2.0000  1.3200
  Sb  2.0500  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [7.7023]
_cell_length_b [17.5238]
_cell_length_c [7.8581]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Rb2SrSb2Pb]
_chemical_formula_sum '[Rb8 Sr4 Sb8 Pb4]'
_cell_volume [1060.6339]
_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  8  0.2202  0.6807  0.0000  1.0
  Sr  Sr1  4  0.0000  0.0000  0.2500  1.0
  Sb  Sb2  8  0.2462  0.3957  0.0000  1.0
  Pb  Pb3  4  0.0000  0.5000  0.2500  1.0
]