data_[Tb4Er4Tm8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [22.7340]
_cell_length_b [3.5402]
_cell_length_c [6.1341]
_cell_angle_alpha [90.0000]
_cell_angle_beta [95.1714]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [TbErTm2]
_chemical_formula_sum '[Tb4 Er4 Tm8]'
_cell_volume [491.6804]
_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  0.1874  0.5000  0.0615  1.0
  Er  Er1  4  0.0632  0.5000  0.3551  1.0
  Tm  Tm2  4  0.0620  0.0000  0.8535  1.0
  Tm  Tm3  4  0.1879  0.0000  0.5630  1.0
]