data_[Tb8Pm6]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.3864]
_cell_length_b [5.0856]
_cell_length_c [8.0475]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.0802]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb4Pm3]
_chemical_formula_sum '[Tb8 Pm6]'
_cell_volume [461.3801]
_cell_formula_units_Z [2]
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  0.0719  0.5000  0.7113  1
  Tb  Tb1  4  0.1425  0.0000  0.4294  1
  Pm  Pm2  4  0.2139  0.5000  0.1447  1
  Pm  Pm3  2  0.0000  0.0000  0.0000  1
]