data_[Tb4Pm6Er2]
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
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [7.2389]
_cell_length_b [7.2467]
_cell_length_c [8.9530]
_cell_angle_alpha [78.1685]
_cell_angle_beta [78.1434]
_cell_angle_gamma [60.1350]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Tb2Pm3Er]
_chemical_formula_sum '[Tb4 Pm6 Er2]'
_cell_volume [395.6661]
_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  2  0.3620  0.8613  0.3331  1
  Tb  Tb1  2  0.3629  0.3616  0.3304  1
  Pm  Pm2  2  0.1393  0.1386  0.6681  1
  Pm  Pm3  2  0.1394  0.6386  0.6655  1
  Pm  Pm4  2  0.2510  0.2498  0.0014  1
  Er  Er5  2  0.2507  0.7493  0.0010  1
]