data_[Rb8U4Al4S20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  U  1.3800  1.7500  0.9913
  Al  1.6100  1.2500  0.6750
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.0283]
_cell_length_b [18.9698]
_cell_length_c [14.5064]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Rb2UAlS5]
_chemical_formula_sum '[Rb8 U4 Al4 S20]'
_cell_volume [1108.5394]
_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  0.1056  0.6755  1
  Rb  Rb1  4  0.0000  0.1248  0.3264  1
  U  U2  4  0.0000  0.2045  0.0280  1
  Al  Al3  4  0.0000  0.4307  0.4237  1
  S  S4  4  0.0000  0.0609  0.0153  1
  S  S5  4  0.0000  0.2973  0.6446  1
  S  S6  4  0.0000  0.3090  0.4023  1
  S  S7  4  0.0000  0.3319  0.0080  1
  S  S8  4  0.0000  0.4915  0.3001  1
]