data_[Na2Cd4Hg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cd  1.6900  1.5500  1.0900
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [4.4604]
_cell_length_b [4.4324]
_cell_length_c [10.6069]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.8416]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaCd2Hg]
_chemical_formula_sum '[Na2 Cd4 Hg2]'
_cell_volume [205.2399]
_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
[
  Na  Na0  2  0.1880  0.2500  0.3809  1
  Cd  Cd1  2  0.0582  0.7500  0.1155  1
  Cd  Cd2  2  0.4464  0.7500  0.8936  1
  Hg  Hg3  2  0.3420  0.2500  0.6814  1
]