data_[Pm2Ho1Hg7]
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 [P3m1]
_cell_length_a [5.0039]
_cell_length_b [5.0039]
_cell_length_c [12.2990]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [156]
_chemical_formula_structural [Pm2HoHg7]
_chemical_formula_sum '[Pm2 Ho1 Hg7]'
_cell_volume [266.7015]
_cell_formula_units_Z [1]
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  1  0.3333  0.6667  0.6514  1
  Pm  Pm1  1  0.6667  0.3333  0.3267  1
  Ho  Ho2  1  0.0000  0.0000  0.9682  1
  Hg  Hg3  1  0.0000  0.0000  0.2321  1
  Hg  Hg4  1  0.0000  0.0000  0.5159  1
  Hg  Hg5  1  0.3333  0.6667  0.1500  1
  Hg  Hg6  1  0.3333  0.6667  0.4079  1
  Hg  Hg7  1  0.3333  0.6667  0.8964  1
  Hg  Hg8  1  0.6667  0.3333  0.0533  1
  Hg  Hg9  1  0.6667  0.3333  0.7816  1
]