data_[Er20Tm12Pb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [12.6872]
_cell_length_b [15.7917]
_cell_length_c [6.2849]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Er5Tm3Pb2]
_chemical_formula_sum '[Er20 Tm12 Pb8]'
_cell_volume [1259.2049]
_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
[
  Er  Er0  8  0.1020  0.3340  0.5000  1
  Er  Er1  8  0.2486  0.5000  0.2500  1
  Er  Er2  4  0.0000  0.5000  0.2500  1
  Tm  Tm3  8  0.1158  0.2035  0.0000  1
  Tm  Tm4  4  0.0000  0.0000  0.2500  1
  Pb  Pb5  8  0.1449  0.1484  0.5000  1
]