data_[Pm2Nd6Sm8]
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 [Pmn2_1]
_cell_length_a [11.8134]
_cell_length_b [7.3730]
_cell_length_c [6.3801]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [PmNd3Sm4]
_chemical_formula_sum '[Pm2 Nd6 Sm8]'
_cell_volume [555.7159]
_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  0.0000  0.3745  0.1481  1
  Nd  Nd1  4  0.2500  0.6259  0.9807  1
  Nd  Nd2  2  0.0000  0.6265  0.6483  1
  Sm  Sm3  4  0.2496  0.1240  0.9802  1
  Sm  Sm4  2  0.0000  0.1246  0.6484  1
  Sm  Sm5  2  0.0000  0.8766  0.1486  1
]