data_[Na6Tb2Bi4Se12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tb  1.1000  1.7500  0.9815
  Bi  2.0200  1.6000  1.0350
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.3067]
_cell_length_b [12.6610]
_cell_length_c [7.4698]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.0345]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3Tb(BiSe3)2]
_chemical_formula_sum '[Na6 Tb2 Bi4 Se12]'
_cell_volume [653.2435]
_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
[
  Na  Na0  4  0.0000  0.1723  0.5000  1.0
  Na  Na1  2  0.0000  0.5000  0.5000  1.0
  Tb  Tb2  2  0.0000  0.0000  0.0000  1.0
  Bi  Bi3  4  0.0000  0.3341  0.0000  1.0
  Se  Se4  8  0.2418  0.8363  0.2345  1.0
  Se  Se5  4  0.2488  0.0000  0.7640  1.0
]