data_[Mg1Hg1Sb1Cl6]
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
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P312]
_cell_length_a [6.7453]
_cell_length_b [6.7453]
_cell_length_c [6.6464]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [149]
_chemical_formula_structural [MgHgSbCl6]
_chemical_formula_sum '[Mg1 Hg1 Sb1 Cl6]'
_cell_volume [261.8894]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.5000  1
  Hg  Hg1  1  0.6667  0.3333  0.0000  1
  Sb  Sb2  1  0.3333  0.6667  0.5000  1
  Cl  Cl3  6  0.0218  0.3191  0.7202  1
]