data_[Tb16Pm4Er8Tm4]
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
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.2893]
_cell_length_b [7.0977]
_cell_length_c [12.2807]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.4750]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb4PmEr2Tm]
_chemical_formula_sum '[Tb16 Pm4 Er8 Tm4]'
_cell_volume [1009.9016]
_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  8  0.0001  0.2501  0.2502  1
  Tb  Tb1  4  0.2495  0.0000  0.7492  1
  Tb  Tb2  4  0.2497  0.0000  0.2499  1
  Pm  Pm3  2  0.0000  0.5000  0.0000  1
  Pm  Pm4  2  0.0000  0.5000  0.5000  1
  Er  Er5  4  0.2500  0.2500  0.0000  1
  Er  Er6  2  0.0000  0.0000  0.0000  1
  Er  Er7  2  0.0000  0.0000  0.5000  1
  Tm  Tm8  4  0.2500  0.2500  0.5000  1
]