data_[Rb4Si2Te4Se2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Si  1.9000  1.1000  0.5400
  Te  2.1000  1.4000  1.2933
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [7.4323]
_cell_length_b [8.0352]
_cell_length_c [9.4980]
_cell_angle_alpha [75.2782]
_cell_angle_beta [72.3581]
_cell_angle_gamma [67.5227]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Rb2SiTe2Se]
_chemical_formula_sum '[Rb4 Si2 Te4 Se2]'
_cell_volume [493.2862]
_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  2  0.1349  0.9854  0.6880  1
  Rb  Rb1  2  0.3930  0.3156  0.8886  1
  Si  Si2  2  0.1373  0.4437  0.3183  1
  Te  Te3  2  0.2207  0.5409  0.5287  1
  Te  Te4  2  0.3364  0.1215  0.2841  1
  Se  Se5  2  0.1354  0.6548  0.1114  1
]