data_[Tb6Sm2Er8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [5.0138]
_cell_length_b [10.0248]
_cell_length_c [10.0199]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [Tb3SmEr4]
_chemical_formula_sum '[Tb6 Sm2 Er8]'
_cell_volume [503.6218]
_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  0.0000  0.2496  0.6270  1.0
  Tb  Tb1  2  0.0000  0.5000  0.3724  1.0
  Sm  Sm2  2  0.0000  0.0000  0.3734  1.0
  Er  Er3  4  0.0000  0.2504  0.1228  1.0
  Er  Er4  2  0.0000  0.0000  0.8768  1.0
  Er  Er5  2  0.0000  0.5000  0.8778  1.0
]