data_[Pm6Dy16Er4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Dy  1.2200  1.7500  1.1310
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [20.7493]
_cell_length_b [5.0335]
_cell_length_c [7.9673]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.3696]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm3(Dy4Er)2]
_chemical_formula_sum '[Pm6 Dy16 Er4]'
_cell_volume [829.7073]
_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  0.0388  0.5000  0.3069  1
  Pm  Pm1  2  0.0000  0.0000  0.0000  1
  Dy  Dy2  4  0.0784  0.0000  0.6146  1
  Dy  Dy3  4  0.1173  0.5000  0.9217  1
  Dy  Dy4  4  0.1557  0.0000  0.2302  1
  Dy  Dy5  4  0.1930  0.5000  0.5386  1
  Er  Er6  4  0.2311  0.0000  0.8462  1
]