data_[Pm4Ho10Er8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ho  1.2300  1.7500  1.0410
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [23.2025]
_cell_length_b [3.5388]
_cell_length_c [8.6700]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.3778]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm2Ho5Er4]
_chemical_formula_sum '[Pm4 Ho10 Er8]'
_cell_volume [689.5936]
_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  0.0909  0.5000  0.7275  1
  Ho  Ho1  4  0.1370  0.0000  0.0927  1
  Ho  Ho2  4  0.2282  0.0000  0.8173  1
  Ho  Ho3  2  0.0000  0.5000  0.0000  1
  Er  Er4  4  0.0467  0.0000  0.3622  1
  Er  Er5  4  0.1825  0.5000  0.4540  1
]