data_[Rb4Cd4Se4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Cd  1.6900  1.5500  1.0900
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.4198]
_cell_length_b [5.2882]
_cell_length_c [20.2193]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [RbCdSe]
_chemical_formula_sum '[Rb4 Cd4 Se4]'
_cell_volume [472.5762]
_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  2  0.0000  0.0000  0.2898  1
  Rb  Rb1  2  0.5000  0.0000  0.5274  1
  Cd  Cd2  2  0.5000  0.0000  0.7317  1
  Cd  Cd3  2  0.5000  0.0000  0.8705  1
  Se  Se4  2  0.0000  0.0000  0.6600  1
  Se  Se5  2  0.0000  0.0000  0.9459  1
]