data_[Cs2Cu4As2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Cu  1.9000  1.3500  0.8200
  As  2.1800  1.1500  0.6600
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [I222]
_cell_length_a [6.4020]
_cell_length_b [8.6642]
_cell_length_c [9.3568]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [23]
_chemical_formula_structural [CsCu2AsSe4]
_chemical_formula_sum '[Cs2 Cu4 As2 Se8]'
_cell_volume [519.0035]
_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
[
  Cs  Cs0  2  0.0000  0.0000  0.0000  1
  Cu  Cu1  4  0.0000  0.5000  0.1405  1
  As  As2  2  0.0000  0.0000  0.5000  1
  Se  Se3  8  0.2142  0.1583  0.3505  1
]