data_[Rb4Ce4Sm2Se12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ce  1.1200  1.8500  1.0800
  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 [7.4466]
_cell_length_b [12.9109]
_cell_length_c [8.5283]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.7808]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Ce2SmSe6]
_chemical_formula_sum '[Rb4 Ce4 Sm2 Se12]'
_cell_volume [785.0065]
_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  0.1662  0.0000  1.0
  Ce  Ce1  4  0.0000  0.3339  0.5000  1.0
  Sm  Sm2  2  0.0000  0.0000  0.5000  1.0
  Se  Se3  8  0.2302  0.1686  0.6915  1.0
  Se  Se4  4  0.2297  0.5000  0.6923  1.0
]