data_[Tb4Pm12Sn8]
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
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.2544]
_cell_length_b [4.6080]
_cell_length_c [9.8351]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.5606]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [TbPm3Sn2]
_chemical_formula_sum '[Tb4 Pm12 Sn8]'
_cell_volume [746.3288]
_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  4  0.1141  0.0000  0.1215  1
  Pm  Pm1  4  0.0520  0.0000  0.6888  1
  Pm  Pm2  4  0.1502  0.5000  0.4804  1
  Pm  Pm3  4  0.1910  0.5000  0.8903  1
  Sn  Sn4  4  0.0040  0.5000  0.8546  1
  Sn  Sn5  4  0.2469  0.0000  0.7220  1
]