data_[Tb21Ce3Pm36]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Ce  1.1200  1.8500  1.0800
  Pm  1.1300  1.8500  1.1100
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [15.9986]
_cell_length_b [15.9986]
_cell_length_c [9.0255]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Tb7CePm12]
_chemical_formula_sum '[Tb21 Ce3 Pm36]'
_cell_volume [2000.6137]
_cell_formula_units_Z [3]
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  18  0.0165  0.8626  0.1891  1
  Tb  Tb1  3  0.0000  0.0000  0.5000  1
  Ce  Ce2  3  0.0000  0.0000  0.0000  1
  Pm  Pm3  18  0.0309  0.7585  0.8404  1
  Pm  Pm4  18  0.0696  0.5059  0.1642  1
]