data_[Pm20Sm4Er8Tm4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [5.6219]
_cell_length_b [20.2770]
_cell_length_c [10.7015]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Pm5SmEr2Tm]
_chemical_formula_sum '[Pm20 Sm4 Er8 Tm4]'
_cell_volume [1219.9221]
_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
[
  Pm  Pm0  4  0.0000  0.0162  0.0204  1
  Pm  Pm1  4  0.0000  0.2808  0.3095  1
  Pm  Pm2  4  0.0000  0.2981  0.7056  1
  Pm  Pm3  4  0.0000  0.3893  0.0231  1
  Pm  Pm4  4  0.0000  0.4813  0.7423  1
  Sm  Sm5  4  0.0000  0.2001  0.0104  1
  Er  Er6  4  0.0000  0.1106  0.7390  1
  Er  Er7  4  0.0000  0.1147  0.3132  1
  Tm  Tm8  4  0.0000  0.4098  0.4603  1
]