data_[Sn1Hg1Bi2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sn  1.9600  1.4500  0.8300
  Hg  2.0000  1.5000  1.2450
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [4.0678]
_cell_length_b [4.0678]
_cell_length_c [7.3053]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [SnHgBi2]
_chemical_formula_sum '[Sn1 Hg1 Bi2]'
_cell_volume [120.8813]
_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
[
  Sn  Sn0  1  0.5000  0.5000  0.0000  1
  Hg  Hg1  1  0.5000  0.5000  0.5000  1
  Bi  Bi2  2  0.0000  0.0000  0.2236  1
]