data_[Rb2Sb2Se4]
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 [P2/c]
_cell_length_a [8.1503]
_cell_length_b [18.0252]
_cell_length_c [7.3666]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.8284]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [RbSbSe2]
_chemical_formula_sum '[Rb2 Sb2 Se4]'
_cell_volume [1030.2676]
_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  0.0000  0.4161  0.2500  1
  Sb  Sb1  2  0.5000  0.4573  0.7500  1
  Se  Se2  4  0.2904  0.4556  0.0098  1
]