data_[Pm4Dy2Mg2]
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
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [3.5355]
_cell_length_b [3.4828]
_cell_length_c [20.5610]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Pm2DyMg]
_chemical_formula_sum '[Pm4 Dy2 Mg2]'
_cell_volume [253.1764]
_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  2  0.5000  0.0000  0.4581  1
  Pm  Pm1  2  0.5000  0.0000  0.6864  1
  Dy  Dy2  2  0.0000  0.0000  0.3098  1
  Mg  Mg3  2  0.0000  0.0000  0.0711  1
]