data_[Er2Th4Al8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Th  1.3000  1.8000  1.0800
  Al  1.6100  1.2500  0.6750
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [5.1215]
_cell_length_b [5.1215]
_cell_length_c [15.6393]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Er(ThAl2)2]
_chemical_formula_sum '[Er2 Th4 Al8]'
_cell_volume [410.2188]
_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
[
  Er  Er0  2  0.0000  0.0000  0.0000  1
  Th  Th1  4  0.0000  0.0000  0.3788  1
  Al  Al2  4  0.0000  0.0000  0.1801  1
  Al  Al3  4  0.0000  0.5000  0.0000  1
]