data_[Na2Ca6Tb4Se12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ca  1.0000  1.8000  1.1400
  Tb  1.1000  1.7500  0.9815
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.2326]
_cell_length_b [12.5135]
_cell_length_c [7.2220]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.4946]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaCa3(TbSe3)2]
_chemical_formula_sum '[Na2 Ca6 Tb4 Se12]'
_cell_volume [616.1540]
_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  2  0.0000  0.0000  0.0000  1.0
  Ca  Ca1  4  0.0000  0.1642  0.5000  1.0
  Ca  Ca2  2  0.0000  0.5000  0.5000  1.0
  Tb  Tb3  4  0.0000  0.3329  0.0000  1.0
  Se  Se4  8  0.2472  0.3296  0.7537  1.0
  Se  Se5  4  0.2412  0.5000  0.2453  1.0
]