data_[Rb4Se10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.0742]
_cell_length_b [8.7536]
_cell_length_c [5.3040]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.9617]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Se5]
_chemical_formula_sum '[Rb4 Se10]'
_cell_volume [462.2862]
_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  4  0.1863  0.5000  0.3665  1.0
  Se  Se1  8  0.0767  0.2231  0.7434  1.0
  Se  Se2  2  0.0000  0.0000  0.0000  1.0
]