data_[Tb8Ho4Er4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Ho  1.2300  1.7500  1.0410
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [6.5170]
_cell_length_b [13.0041]
_cell_length_c [6.5160]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.9054]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Tb2HoEr]
_chemical_formula_sum '[Tb8 Ho4 Er4]'
_cell_volume [500.8587]
_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  0.1250  0.0644  0.8748  1
  Tb  Tb1  4  0.3748  0.5642  0.1245  1
  Ho  Ho2  4  0.3752  0.6753  0.6250  1
  Er  Er3  4  0.1250  0.1752  0.3751  1
]