data_[Pm6Nd4Er2Sb12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Nd  1.1400  1.8500  1.2765
  Er  1.2400  1.7500  1.0300
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [19.5268]
_cell_length_b [4.4830]
_cell_length_c [8.9585]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.2743]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm3Nd2ErSb6]
_chemical_formula_sum '[Pm6 Nd4 Er2 Sb12]'
_cell_volume [763.2699]
_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
[
  Pm  Pm0  4  0.1679  0.0000  0.8338  1
  Pm  Pm1  2  0.0000  0.5000  0.5000  1
  Nd  Nd2  4  0.1657  0.0000  0.3321  1
  Er  Er3  2  0.0000  0.5000  0.0000  1
  Sb  Sb4  4  0.0013  0.0000  0.7570  1
  Sb  Sb5  4  0.1639  0.5000  0.0801  1
  Sb  Sb6  4  0.1664  0.5000  0.5842  1
]