data_[Ba6Tb3Sb3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Tb  1.1000  1.7500  0.9815
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [6.0429]
_cell_length_b [6.0429]
_cell_length_c [14.7864]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Ba2TbSbO6]
_chemical_formula_sum '[Ba6 Tb3 Sb3 O18]'
_cell_volume [467.6062]
_cell_formula_units_Z [3]
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
[
  Ba  Ba0  6  0.0000  0.0000  0.2501  1.0
  Tb  Tb1  3  0.0000  0.0000  0.0000  1.0
  Sb  Sb2  3  -0.0000  0.0000  0.5000  1.0
  O  O3  18  0.0187  0.4951  0.2455  1.0
]