data_[Rb4Sb4Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sb  2.0500  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [6.8402]
_cell_length_b [6.8839]
_cell_length_c [12.8367]
_cell_angle_alpha [100.9215]
_cell_angle_beta [99.2547]
_cell_angle_gamma [104.4426]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [RbSbSe2]
_chemical_formula_sum '[Rb4 Sb4 Se8]'
_cell_volume [560.8107]
_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  2  0.1753  0.4365  0.8465  1
  Rb  Rb1  2  0.2214  0.8972  0.5822  1
  Sb  Sb2  2  0.2861  0.9927  0.0865  1
  Sb  Sb3  2  0.3093  0.4123  0.3488  1
  Se  Se4  2  0.2564  0.0172  0.3181  1
  Se  Se5  2  0.2901  0.3792  0.1238  1
  Se  Se6  2  0.2954  0.4243  0.5892  1
  Se  Se7  2  0.3230  0.9777  0.8664  1
]