data_[Tb8Se4O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.0642]
_cell_length_b [3.9278]
_cell_length_c [8.2598]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.5980]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb2SeO2]
_chemical_formula_sum '[Tb8 Se4 O8]'
_cell_volume [385.9188]
_cell_formula_units_Z [4]
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  4  0.1252  0.5000  0.7960  1.0
  Tb  Tb1  4  0.1318  0.0000  0.4289  1.0
  Se  Se2  4  0.1624  0.5000  0.1527  1.0
  O  O3  4  0.0519  0.0000  0.6868  1.0
  O  O4  4  0.1755  0.5000  0.5517  1.0
]