data_[Pm10Hg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.1494]
_cell_length_b [5.5292]
_cell_length_c [6.8642]
_cell_angle_alpha [90.0000]
_cell_angle_beta [123.0085]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm5Hg]
_chemical_formula_sum '[Pm10 Hg2]'
_cell_volume [386.6824]
_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  0.1439  0.0000  0.7906  1
  Pm  Pm1  4  0.2007  0.0000  0.3373  1
  Pm  Pm2  2  0.0000  0.5000  0.0000  1
  Hg  Hg3  2  0.0000  0.5000  0.5000  1
]