data_[Sn3Hg3As3Pb3]
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
  As  2.1800  1.1500  0.6600
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [4.0526]
_cell_length_b [4.0526]
_cell_length_c [26.0244]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [SnHgAsPb]
_chemical_formula_sum '[Sn3 Hg3 As3 Pb3]'
_cell_volume [370.1486]
_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
[
  Sn  Sn0  3  0.0000  0.0000  0.4648  1.0
  Hg  Hg1  3  0.0000  0.0000  0.5763  1.0
  As  As2  3  0.0000  0.0000  0.7439  1.0
  Pb  Pb3  3  0.0000  0.0000  0.9937  1.0
]