data_[Tb4Pm8Er2]
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
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.2038]
_cell_length_b [6.6463]
_cell_length_c [11.6253]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.3576]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Tb2Pm4Er]
_chemical_formula_sum '[Tb4 Pm8 Er2]'
_cell_volume [464.3745]
_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
[
  Tb  Tb0  2  0.2870  0.2500  0.4228  1
  Tb  Tb1  2  0.3929  0.2500  0.0061  1
  Pm  Pm2  4  0.3514  0.0102  0.7148  1
  Pm  Pm3  2  0.0385  0.7500  0.8641  1
  Pm  Pm4  2  0.1516  0.7500  0.4499  1
  Er  Er5  2  0.1482  0.7500  0.1628  1
]