data_[Tb12Pm20Sm4]
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
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [17.7033]
_cell_length_b [9.3979]
_cell_length_c [7.3093]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Tb3Pm5Sm]
_chemical_formula_sum '[Tb12 Pm20 Sm4]'
_cell_volume [1216.0694]
_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  0.1789  0.0001  0.2500  1
  Tb  Tb1  4  0.0000  0.0000  0.0000  1
  Pm  Pm2  16  0.1643  0.3235  0.0007  1
  Pm  Pm3  4  0.0000  0.3050  0.2500  1
  Sm  Sm4  4  0.0000  0.3296  0.7500  1
]