data_[Pr8Er4Sn8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Er  1.2400  1.7500  1.0300
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [5.1455]
_cell_length_b [18.4706]
_cell_length_c [6.6001]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Pr2ErSn2]
_chemical_formula_sum '[Pr8 Er4 Sn8]'
_cell_volume [627.2820]
_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
[
  Pr  Pr0  4  0.0000  0.0000  0.0000  1.0
  Pr  Pr1  4  0.0000  0.1948  0.7500  1.0
  Er  Er2  4  0.0000  0.3981  0.7500  1.0
  Sn  Sn3  4  0.0000  0.1853  0.2500  1.0
  Sn  Sn4  4  0.0000  0.4239  0.2500  1.0
]