data_[Na4Sn8As4Se24]
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
  As  2.1800  1.1500  0.6600
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [14.7838]
_cell_length_b [11.7113]
_cell_length_c [7.7016]
_cell_angle_alpha [90.0000]
_cell_angle_beta [112.9741]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaSn2AsSe6]
_chemical_formula_sum '[Na4 Sn8 As4 Se24]'
_cell_volume [1227.6735]
_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
[
  Na  Na0  4  0.0000  0.2556  0.2500  1.0
  Sn  Sn1  8  0.2369  0.3977  0.1346  1.0
  As  As2  4  0.0000  0.2238  0.7500  1.0
  Se  Se3  8  0.0850  0.0991  0.6071  1.0
  Se  Se4  8  0.1502  0.4570  0.3705  1.0
  Se  Se5  8  0.1522  0.1987  0.0951  1.0
]