data_[Pr2Nd6Er6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Nd  1.1400  1.8500  1.2765
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [P6_3/m]
_cell_length_a [9.6176]
_cell_length_b [9.6176]
_cell_length_c [5.8570]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [176]
_chemical_formula_structural [Pr(NdEr)3]
_chemical_formula_sum '[Pr2 Nd6 Er6]'
_cell_volume [469.1760]
_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
[
  Pr  Pr0  2  0.3333  0.6667  0.7500  1.0
  Nd  Nd1  6  0.0961  0.6217  0.2500  1.0
  Er  Er2  6  0.0466  0.8147  0.7500  1.0
]