data_[Rb12Tb4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tb  1.1000  1.7500  0.9815
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.7224]
_cell_length_b [12.5708]
_cell_length_c [7.3639]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.6244]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb3TbO3]
_chemical_formula_sum '[Rb12 Tb4 O12]'
_cell_volume [706.7783]
_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
[
  Rb  Rb0  4  0.0000  0.2115  0.5000  1.0
  Rb  Rb1  4  0.0000  0.2596  0.0000  1.0
  Rb  Rb2  4  0.1402  0.5000  0.3597  1.0
  Tb  Tb3  4  0.1788  0.0000  0.1497  1.0
  O  O4  8  0.1905  0.3611  0.7325  1.0
  O  O5  4  0.1050  0.0000  0.8468  1.0
]