data_[Na4Cd8Hg6]
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 [C2/m]
_cell_length_a [10.3844]
_cell_length_b [4.6616]
_cell_length_c [9.6560]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.1934]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2Cd4Hg3]
_chemical_formula_sum '[Na4 Cd8 Hg6]'
_cell_volume [435.8087]
_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  4  0.1677  0.5000  0.2263  1
  Cd  Cd1  4  0.0063  0.0000  0.3390  1
  Cd  Cd2  4  0.1644  0.5000  0.8894  1
  Hg  Hg3  4  0.1691  0.5000  0.5672  1
  Hg  Hg4  2  0.0000  0.0000  0.0000  1
]