data_[Pm21Dy36Er3]
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 [R-3]
_cell_length_a [11.9768]
_cell_length_b [11.9768]
_cell_length_c [16.2086]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Pm7Dy12Er]
_chemical_formula_sum '[Pm21 Dy36 Er3]'
_cell_volume [2013.5227]
_cell_formula_units_Z [3]
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  18  0.0562  0.1883  0.7898  1
  Pm  Pm1  3  -0.0000  0.0000  0.5000  1
  Dy  Dy2  18  0.0258  0.4502  0.7219  1
  Dy  Dy3  18  0.0518  0.5859  0.0828  1
  Er  Er4  3  0.0000  0.0000  0.0000  1
]