data_[Cs2K2Be2I8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  K  0.8200  2.2000  1.5200
  Be  1.5700  1.0500  0.5900
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.7071]
_cell_length_b [8.1467]
_cell_length_c [10.6422]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.5316]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CsKBeI4]
_chemical_formula_sum '[Cs2 K2 Be2 I8]'
_cell_volume [629.7462]
_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  0.2978  0.2500  0.0841  1.0
  K  K1  2  0.2115  0.2500  0.5423  1.0
  Be  Be2  2  0.1933  0.7500  0.2982  1.0
  I  I3  4  0.0063  0.0088  0.7520  1.0
  I  I4  2  0.3693  0.7500  0.5351  1.0
  I  I5  2  0.3915  0.7500  0.1607  1.0
]