data_[Pm8Si20Os12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Si  1.9000  1.1000  0.5400
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [9.7573]
_cell_length_b [12.1537]
_cell_length_c [5.7445]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Pm2Si5Os3]
_chemical_formula_sum '[Pm8 Si20 Os12]'
_cell_volume [681.2243]
_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  0.2327  0.1342  0.0000  1
  Si  Si1  8  0.0000  0.2898  0.2500  1
  Si  Si2  8  0.1654  0.4031  0.0000  1
  Si  Si3  4  0.0000  0.0000  0.2500  1
  Os  Os4  8  0.0967  0.1457  0.5000  1
  Os  Os5  4  0.0000  0.5000  0.2500  1
]