data_[Rb8Mg12Pb20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Mg  1.3100  1.5000  0.8600
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [13.0751]
_cell_length_b [14.3260]
_cell_length_c [7.2361]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Rb2Mg3Pb5]
_chemical_formula_sum '[Rb8 Mg12 Pb20]'
_cell_volume [1355.4302]
_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  0.2420  0.3691  0.0000  1
  Mg  Mg1  8  0.1273  0.3754  0.5000  1
  Mg  Mg2  4  0.0000  0.0000  0.2500  1
  Pb  Pb3  8  0.0000  0.2414  0.2500  1
  Pb  Pb4  8  0.1440  0.1114  0.0000  1
  Pb  Pb5  4  0.0000  0.5000  0.2500  1
]