data_[Pm4Ho2Er16]
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 [8.9936]
_cell_length_b [15.9519]
_cell_length_c [5.8476]
_cell_angle_alpha [90.0000]
_cell_angle_beta [123.1483]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm2HoEr8]
_chemical_formula_sum '[Pm4 Ho2 Er16]'
_cell_volume [702.3976]
_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  0.0000  0.3069  0.0000  1
  Ho  Ho1  2  0.0000  0.0000  0.5000  1
  Er  Er2  8  0.2141  0.8838  0.1741  1
  Er  Er3  4  0.0000  0.2072  0.5000  1
  Er  Er4  4  0.0704  0.5000  0.2961  1
]