data_[Na2Tb2As4O14]
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
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [7.2589]
_cell_length_b [9.3224]
_cell_length_c [5.0389]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.2268]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [NaTbAs2O7]
_chemical_formula_sum '[Na2 Tb2 As4 O14]'
_cell_volume [333.2506]
_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  0.2483  0.0000  1.0
  Tb  Tb1  2  0.0000  0.6334  0.0000  1.0
  As  As2  4  0.2108  0.9618  0.4148  1.0
  O  O3  4  0.1292  0.4505  0.2864  1.0
  O  O4  4  0.1740  0.8016  0.2538  1.0
  O  O5  4  0.2467  0.5962  0.7936  1.0
  O  O6  2  0.0000  0.0313  0.5000  1.0
]