data_[Tb2Ta2N4O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Ta  1.5000  1.4500  0.8200
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmma]
_cell_length_a [5.6595]
_cell_length_b [3.9094]
_cell_length_c [5.8394]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [51]
_chemical_formula_structural [TbTaN2O]
_chemical_formula_sum '[Tb2 Ta2 N4 O2]'
_cell_volume [129.1973]
_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
[
  Tb  Tb0  2  0.2500  0.0000  0.8031  1
  Ta  Ta1  2  0.2500  0.5000  0.2730  1
  N  N2  2  0.0000  0.5000  0.5000  1
  N  N3  2  0.2500  0.0000  0.1909  1
  O  O4  2  0.0000  0.5000  0.0000  1
]