data_[Tb1Pr1Y1Er1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Pr  1.1300  1.8500  1.0600
  Y  1.2200  1.8000  1.0400
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [Pmm2]
_cell_length_a [3.4483]
_cell_length_b [5.6757]
_cell_length_c [6.7634]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [TbPrYEr]
_chemical_formula_sum '[Tb1 Pr1 Y1 Er1]'
_cell_volume [132.3683]
_cell_formula_units_Z [1]
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  1  0.0000  0.5000  0.8040  1
  Pr  Pr1  1  0.0000  0.0000  0.5499  1
  Y  Y2  1  0.0000  0.0000  0.0655  1
  Er  Er3  1  0.5000  0.5000  0.3002  1
]