data_[Mg2Cd14Hg8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  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 [12.5537]
_cell_length_b [5.5327]
_cell_length_c [10.7582]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.6715]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [MgCd7Hg4]
_chemical_formula_sum '[Mg2 Cd14 Hg8]'
_cell_volume [614.5295]
_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
[
  Mg  Mg0  2  0.0000  0.0000  0.0000  1
  Cd  Cd1  4  0.0925  0.0000  0.4474  1
  Cd  Cd2  4  0.1957  0.5000  0.9052  1
  Cd  Cd3  4  0.2391  0.5000  0.6652  1
  Cd  Cd4  2  0.0000  0.5000  0.0000  1
  Hg  Hg5  4  0.0914  0.5000  0.3261  1
  Hg  Hg6  4  0.1921  0.0000  0.7725  1
]