data_[Mg3Mn3Hg3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Mn  1.5500  1.4000  0.6483
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P-62m]
_cell_length_a [7.8844]
_cell_length_b [7.8844]
_cell_length_c [3.1753]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [189]
_chemical_formula_structural [MgMnHg]
_chemical_formula_sum '[Mg3 Mn3 Hg3]'
_cell_volume [170.9399]
_cell_formula_units_Z [3]
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  3  0.0000  0.7034  0.5000  1
  Mn  Mn1  3  0.0000  0.3689  0.0000  1
  Hg  Hg2  2  0.3333  0.6667  0.5000  1
  Hg  Hg3  1  0.0000  0.0000  0.0000  1
]