data_[Rb4B28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  B  2.0400  0.8500  0.4100
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.1598]
_cell_length_b [7.1354]
_cell_length_c [5.8288]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.2454]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [RbB7]
_chemical_formula_sum '[Rb4 B28]'
_cell_volume [377.0264]
_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  0.1783  0.0000  0.0378  1
  B  B1  8  0.0217  0.3163  0.6771  1
  B  B2  8  0.1585  0.2719  0.5008  1
  B  B3  4  0.0000  0.1204  0.5000  1
  B  B4  4  0.0079  0.5000  0.8625  1
  B  B5  4  0.0963  0.5000  0.4553  1
]