data_[Tb4Pm4Sm20Er8]
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
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [5.6407]
_cell_length_b [20.2062]
_cell_length_c [10.6705]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [TbPmSm5Er2]
_chemical_formula_sum '[Tb4 Pm4 Sm20 Er8]'
_cell_volume [1216.2016]
_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  0.4123  0.4548  1
  Pm  Pm1  4  0.0000  0.2009  0.0102  1
  Sm  Sm2  4  0.0000  0.0169  0.0234  1
  Sm  Sm3  4  0.0000  0.2815  0.3085  1
  Sm  Sm4  4  0.0000  0.2981  0.7053  1
  Sm  Sm5  4  0.0000  0.3919  0.0251  1
  Sm  Sm6  4  0.0000  0.4788  0.7405  1
  Er  Er7  4  0.0000  0.1103  0.7373  1
  Er  Er8  4  0.0000  0.1157  0.3189  1
]