data_[Pm12Sm4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [6.3344]
_cell_length_b [11.8028]
_cell_length_c [7.3192]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [Pm3Sm]
_chemical_formula_sum '[Pm12 Sm4]'
_cell_volume [547.2105]
_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  0.2500  0.5002  0.3750  1
  Pm  Pm1  4  0.0835  0.2500  0.1248  1
  Sm  Sm2  4  0.0834  0.2500  0.6251  1
]