data_[Mg4Hg14Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.2086]
_cell_length_b [10.0506]
_cell_length_c [5.7463]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.6136]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Mg2Hg7Pb2]
_chemical_formula_sum '[Mg4 Hg14 Pb4]'
_cell_volume [568.2859]
_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  4  0.2158  0.5000  0.4699  1
  Hg  Hg1  8  0.1800  0.2472  0.6858  1
  Hg  Hg2  4  0.0918  0.5000  0.8660  1
  Hg  Hg3  2  0.0000  0.0000  0.5000  1
  Pb  Pb4  4  0.0000  0.1682  0.0000  1
]