data_[K4Sn6Bi4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  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 [13.5516]
_cell_length_b [4.8764]
_cell_length_c [8.2904]
_cell_angle_alpha [90.0000]
_cell_angle_beta [112.6270]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Sn3Bi2]
_chemical_formula_sum '[K4 Sn6 Bi4]'
_cell_volume [505.6820]
_cell_formula_units_Z [2]
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
[
  K  K0  4  0.1394  0.0000  0.7859  1.0
  Sn  Sn1  4  0.0982  0.5000  0.4220  1.0
  Sn  Sn2  2  0.0000  0.5000  0.0000  1.0
  Bi  Bi3  4  0.1584  0.0000  0.2477  1.0
]