data_[Rb2Ge2Sb2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ge  2.0100  1.2500  0.7700
  Sb  2.0500  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.0549]
_cell_length_b [7.1666]
_cell_length_c [9.6585]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.2744]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbGeSbSe4]
_chemical_formula_sum '[Rb2 Ge2 Sb2 Se8]'
_cell_volume [463.7006]
_cell_formula_units_Z [2]
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  0.2608  0.2500  0.0559  1.0
  Ge  Ge1  2  0.2408  0.7500  0.3295  1.0
  Sb  Sb2  2  0.2284  0.2500  0.5041  1.0
  Se  Se3  4  0.0134  0.0092  0.2922  1.0
  Se  Se4  2  0.4298  0.7500  0.1723  1.0
  Se  Se5  2  0.4452  0.7500  0.5805  1.0
]