data_[Rb4Sm4Cd4Se12]
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
  Cd  1.6900  1.5500  1.0900
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.3101]
_cell_length_b [15.5317]
_cell_length_c [11.2761]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [RbSmCdSe3]
_chemical_formula_sum '[Rb4 Sm4 Cd4 Se12]'
_cell_volume [754.8688]
_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  0.2467  0.7500  1
  Sm  Sm1  4  0.0000  0.5000  0.0000  1
  Cd  Cd2  4  0.0000  0.0378  0.2500  1
  Se  Se3  8  0.0000  0.1257  0.0513  1
  Se  Se4  4  0.0000  0.4324  0.2500  1
]