data_[Rb8Sm12O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sm  1.1700  1.8500  1.2290
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [16.8170]
_cell_length_b [7.1188]
_cell_length_c [6.8428]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.6693]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Rb2Sm3O4]
_chemical_formula_sum '[Rb8 Sm12 O16]'
_cell_volume [795.9952]
_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  8  0.0953  0.0668  0.9187  1
  Sm  Sm1  8  0.1918  0.3943  0.6233  1
  Sm  Sm2  4  0.0000  0.4774  0.2500  1
  O  O3  8  0.0498  0.3113  0.5477  1
  O  O4  8  0.2370  0.0917  0.6347  1
]