data_[Rb8Ta4Zn4Se20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ta  1.5000  1.4500  0.8200
  Zn  1.6500  1.3500  0.8800
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.7350]
_cell_length_b [21.2936]
_cell_length_c [14.3758]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Rb2TaZnSe5]
_chemical_formula_sum '[Rb8 Ta4 Zn4 Se20]'
_cell_volume [1143.3239]
_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  4  0.0000  0.1239  0.6941  1
  Rb  Rb1  4  0.0000  0.1256  0.2986  1
  Ta  Ta2  4  0.0000  0.2263  0.0095  1
  Zn  Zn3  4  0.0000  0.4255  0.4448  1
  Se  Se4  4  0.0000  0.0945  0.0492  1
  Se  Se5  4  0.0000  0.2825  0.6351  1
  Se  Se6  4  0.0000  0.2982  0.3857  1
  Se  Se7  4  0.0000  0.3387  0.9979  1
  Se  Se8  4  0.0000  0.4871  0.3091  1
]