data_[Rb4Be4Sn4I20]
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
  Sn  1.9600  1.4500  0.8300
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.4068]
_cell_length_b [13.4710]
_cell_length_c [11.3566]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.2943]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbBeSnI5]
_chemical_formula_sum '[Rb4 Be4 Sn4 I20]'
_cell_volume [1427.3583]
_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  0.3558  0.7500  1.0
  Be  Be1  4  0.0000  0.3127  0.2500  1.0
  Sn  Sn2  4  0.0000  0.0000  0.0000  1.0
  I  I3  8  0.1153  0.2144  0.1430  1.0
  I  I4  8  0.1747  0.4171  0.4251  1.0
  I  I5  4  0.0000  0.0907  0.7500  1.0
]