data_[Rb10Tb2O8]
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 [17.8748]
_cell_length_b [3.7589]
_cell_length_c [7.7044]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.4641]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb5TbO4]
_chemical_formula_sum '[Rb10 Tb2 O8]'
_cell_volume [501.2501]
_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
[
  Rb  Rb0  4  0.1526  0.0000  0.3223  1.0
  Rb  Rb1  4  0.1592  0.0000  0.8648  1.0
  Rb  Rb2  2  0.0000  0.5000  0.5000  1.0
  Tb  Tb3  2  0.0000  0.5000  0.0000  1.0
  O  O4  4  0.0006  0.0000  0.7953  1.0
  O  O5  4  0.1352  0.5000  0.0839  1.0
]