data_[Na2Tb2Zn2Se6]
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
  Zn  1.6500  1.3500  0.8800
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [8.4037]
_cell_length_b [4.1116]
_cell_length_c [10.1075]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.0092]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaTbZnSe3]
_chemical_formula_sum '[Na2 Tb2 Zn2 Se6]'
_cell_volume [335.6985]
_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  0.1890  0.2500  0.1762  1.0
  Tb  Tb1  2  0.3273  0.7500  0.8513  1.0
  Zn  Zn2  2  0.0801  0.2500  0.6026  1.0
  Se  Se3  2  0.0822  0.2500  0.8475  1.0
  Se  Se4  2  0.2216  0.7500  0.5432  1.0
  Se  Se5  2  0.4356  0.7500  0.1478  1.0
]