data_[Pm4Sm8Os4]
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
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [7.4727]
_cell_length_b [9.4357]
_cell_length_c [6.4867]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [PmSm2Os]
_chemical_formula_sum '[Pm4 Sm8 Os4]'
_cell_volume [457.3823]
_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  4  0.0416  0.2500  0.8637  1
  Sm  Sm1  8  0.1748  0.0653  0.3311  1
  Os  Os2  4  0.1147  0.7500  0.5473  1
]