data_[Sr8Sn4Bi8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Sn  1.9600  1.4500  0.8300
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [15.3083]
_cell_length_b [6.7215]
_cell_length_c [9.9768]
_cell_angle_alpha [90.0000]
_cell_angle_beta [128.9971]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2SnBi2]
_chemical_formula_sum '[Sr8 Sn4 Bi8]'
_cell_volume [797.8095]
_cell_formula_units_Z [4]
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
[
  Sr  Sr0  4  0.0990  0.0000  0.8675  1
  Sr  Sr1  4  0.1629  0.5000  0.5112  1
  Sn  Sn2  4  0.1214  0.5000  0.0997  1
  Bi  Bi3  4  0.1222  0.5000  0.8085  1
  Bi  Bi4  4  0.1369  0.0000  0.5644  1
]