data_[Na4Sn2Bi5]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sn  1.9600  1.4500  0.8300
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [8.6594]
_cell_length_b [3.3538]
_cell_length_c [11.2492]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.7553]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Na4Sn2Bi5]
_chemical_formula_sum '[Na4 Sn2 Bi5]'
_cell_volume [325.9956]
_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
[
  Na  Na0  2  0.1616  0.5000  0.8982  1.0
  Na  Na1  2  0.2933  0.5000  0.4375  1.0
  Sn  Sn2  2  0.0601  0.0000  0.6304  1.0
  Bi  Bi3  2  0.1891  0.0000  0.1741  1.0
  Bi  Bi4  2  0.4193  0.0000  0.7029  1.0
  Bi  Bi5  1  0.5000  0.0000  0.0000  1.0
]