data_[Tb12Ce4Pm6Er2]
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
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.1874]
_cell_length_b [10.7150]
_cell_length_c [11.8136]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.0550]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb6Ce2Pm3Er]
_chemical_formula_sum '[Tb12 Ce4 Pm6 Er2]'
_cell_volume [771.1880]
_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  8  0.2500  0.3324  0.7541  1
  Tb  Tb1  4  0.2471  0.5000  0.2462  1
  Ce  Ce2  4  0.0000  0.3336  0.0000  1
  Pm  Pm3  4  0.0000  0.1661  0.5000  1
  Pm  Pm4  2  0.0000  0.5000  0.5000  1
  Er  Er5  2  0.0000  0.0000  0.0000  1
]