data_[Rb6Tb4Sm2Se12]
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
  Sm  1.1700  1.8500  1.2290
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.4229]
_cell_length_b [12.8577]
_cell_length_c [8.3820]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.1775]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb3Tb2SmSe6]
_chemical_formula_sum '[Rb6 Tb4 Sm2 Se12]'
_cell_volume [764.3055]
_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  0.0000  0.1661  0.5000  1.0
  Rb  Rb1  2  0.0000  0.5000  0.5000  1.0
  Tb  Tb2  4  0.0000  0.3333  0.0000  1.0
  Sm  Sm3  2  0.0000  0.0000  0.0000  1.0
  Se  Se4  8  0.2344  0.8314  0.1971  1.0
  Se  Se5  4  0.2284  0.5000  0.1970  1.0
]