data_[Rb9Er9Al3Se24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Er  1.2400  1.7500  1.0300
  Al  1.6100  1.2500  0.6750
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [8.0929]
_cell_length_b [8.0929]
_cell_length_c [24.8639]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Rb3Er3AlSe8]
_chemical_formula_sum '[Rb9 Er9 Al3 Se24]'
_cell_volume [1410.2841]
_cell_formula_units_Z [3]
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  9  0.0000  0.5000  0.5000  1.0
  Er  Er1  9  0.0000  0.5000  0.0000  1.0
  Al  Al2  3  0.0000  0.0000  0.0000  1.0
  Se  Se3  18  0.0218  0.5109  0.7277  1.0
  Se  Se4  6  0.0000  0.0000  0.2680  1.0
]