data_[Pm2Ho4Hg16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ho  1.2300  1.7500  1.0410
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [16.0592]
_cell_length_b [4.9442]
_cell_length_c [7.2576]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.9117]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm(HoHg4)2]
_chemical_formula_sum '[Pm2 Ho4 Hg16]'
_cell_volume [545.1436]
_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  2  0.0000  0.5000  0.0000  1
  Ho  Ho1  4  0.2154  0.0000  0.6544  1
  Hg  Hg2  4  0.0314  0.0000  0.7291  1
  Hg  Hg3  4  0.0980  0.5000  0.4624  1
  Hg  Hg4  4  0.1495  0.0000  0.1908  1
  Hg  Hg5  4  0.1768  0.5000  0.9056  1
]