data_[Pm8Nd28Sm8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Nd  1.1400  1.8500  1.2765
  Sm  1.1700  1.8500  1.2290
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [16.2452]
_cell_length_b [6.4040]
_cell_length_c [15.9397]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.2008]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pm2Nd7Sm2]
_chemical_formula_sum '[Pm8 Nd28 Sm8]'
_cell_volume [1546.0484]
_cell_formula_units_Z [4]
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  8  0.1371  0.1664  0.4776  1
  Nd  Nd1  8  0.0460  0.1660  0.6590  1
  Nd  Nd2  8  0.0914  0.3341  0.0686  1
  Nd  Nd3  8  0.1821  0.6653  0.3861  1
  Nd  Nd4  4  0.0000  0.3322  0.2500  1
  Sm  Sm5  8  0.2274  0.1656  0.2955  1
]