data_[Pm1Cd1Hg1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Cd  1.6900  1.5500  1.0900
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P-6m2]
_cell_length_a [5.0390]
_cell_length_b [5.0390]
_cell_length_c [3.4678]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [187]
_chemical_formula_structural [PmCdHg]
_chemical_formula_sum '[Pm1 Cd1 Hg1]'
_cell_volume [76.2582]
_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  0.0000  1
  Cd  Cd1  1  0.6667  0.3333  0.5000  1
  Hg  Hg2  1  0.0000  0.0000  0.5000  1
]