data_[Mg12Hg10]
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
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.8125]
_cell_length_b [6.9196]
_cell_length_c [14.7687]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Mg6Hg5]
_chemical_formula_sum '[Mg12 Hg10]'
_cell_volume [491.8071]
_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  8  0.0000  0.2453  0.1611  1
  Mg  Mg1  4  0.0000  0.2559  0.5000  1
  Hg  Hg2  4  0.0000  0.0000  0.3291  1
  Hg  Hg3  4  0.0000  0.5000  0.3411  1
  Hg  Hg4  2  0.0000  0.5000  0.0000  1
]