data_[Mg4Hg4Sb2O12]
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
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [5.4756]
_cell_length_b [9.4879]
_cell_length_c [6.4461]
_cell_angle_alpha [90.0000]
_cell_angle_beta [97.1343]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Mg2Hg2SbO6]
_chemical_formula_sum '[Mg4 Hg4 Sb2 O12]'
_cell_volume [332.2969]
_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  0.0000  0.3402  0.5000  1
  Hg  Hg1  4  0.0000  0.1711  0.0000  1
  Sb  Sb2  2  0.0000  0.0000  0.5000  1
  O  O3  8  0.1304  0.1638  0.3327  1
  O  O4  4  0.1681  0.5000  0.3437  1
]