data_[Tb4Pm8Dy16Er4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Pm  1.1300  1.8500  1.1100
  Dy  1.2200  1.7500  1.1310
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [6.8071]
_cell_length_b [11.7966]
_cell_length_c [13.2599]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [TbPm2Dy4Er]
_chemical_formula_sum '[Tb4 Pm8 Dy16 Er4]'
_cell_volume [1064.7834]
_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
[
  Tb  Tb0  4  0.0000  0.0000  0.0000  1
  Pm  Pm1  4  0.0000  0.0000  0.5000  1
  Pm  Pm2  4  0.2500  0.2500  0.7500  1
  Dy  Dy3  8  0.0000  0.0035  0.2488  1
  Dy  Dy4  8  0.2490  0.2500  0.0038  1
  Er  Er5  4  0.2500  0.2500  0.2500  1
]