data_[Pm16Mg4Os2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Mg  1.3100  1.5000  0.8600
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [17.8371]
_cell_length_b [5.5868]
_cell_length_c [7.1899]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.1566]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm8Mg2Os]
_chemical_formula_sum '[Pm16 Mg4 Os2]'
_cell_volume [672.6100]
_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  4  0.0154  0.0000  0.7842  1
  Pm  Pm1  4  0.0990  0.5000  0.4046  1
  Pm  Pm2  4  0.1466  0.5000  0.9292  1
  Pm  Pm3  4  0.1948  0.0000  0.2554  1
  Mg  Mg4  4  0.1844  0.0000  0.6925  1
  Os  Os5  2  0.0000  0.5000  0.0000  1
]