data_[Tb4Sm2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Sm  1.1700  1.8500  1.2290
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.3929]
_cell_length_b [3.4554]
_cell_length_c [5.9192]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.2301]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tb2SmO4]
_chemical_formula_sum '[Tb4 Sm2 O8]'
_cell_volume [225.3830]
_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
[
  Tb  Tb0  4  0.2073  0.5000  0.7063  1
  Sm  Sm1  2  0.0000  0.0000  0.0000  1
  O  O2  4  0.1385  0.0000  0.4338  1
  O  O3  4  0.1505  0.5000  0.0204  1
]