data_[Rb16Be8As8Se32]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Be  1.5700  1.0500  0.5900
  As  2.1800  1.1500  0.6600
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Fddd]
_cell_length_a [6.0308]
_cell_length_b [14.2745]
_cell_length_c [24.5087]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [70]
_chemical_formula_structural [Rb2BeAsSe4]
_chemical_formula_sum '[Rb16 Be8 As8 Se32]'
_cell_volume [2109.8691]
_cell_formula_units_Z [8]
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  16  0.0000  0.0000  0.1803  1.0
  Be  Be1  8  0.0000  0.0000  0.0000  1.0
  As  As2  8  0.0000  0.0000  0.5000  1.0
  Se  Se3  32  0.0230  0.1579  0.3016  1.0
]