data_[Pm4Ho14Er4]
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 [11.1674]
_cell_length_b [11.4611]
_cell_length_c [6.0554]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.7328]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm2Ho7Er2]
_chemical_formula_sum '[Pm4 Ho14 Er4]'
_cell_volume [709.4854]
_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  0.0895  0.0000  0.3045  1
  Ho  Ho1  8  0.1748  0.2627  0.6794  1
  Ho  Ho2  4  0.2279  0.5000  0.0800  1
  Ho  Ho3  2  0.0000  0.5000  0.5000  1
  Er  Er4  4  0.0000  0.2856  0.0000  1
]