data_[Cs2Na2Be2Br8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Na  0.9300  1.8000  1.1600
  Be  1.5700  1.0500  0.5900
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.8300]
_cell_length_b [7.5074]
_cell_length_c [9.6711]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.5287]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CsNaBeBr4]
_chemical_formula_sum '[Cs2 Na2 Be2 Br8]'
_cell_volume [467.3688]
_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  0.2736  0.2500  0.0743  1.0
  Na  Na1  2  0.2195  0.2500  0.5469  1.0
  Be  Be2  2  0.1997  0.7500  0.3200  1.0
  Br  Br3  4  0.0056  0.0136  0.7161  1.0
  Br  Br4  2  0.3699  0.7500  0.1610  1.0
  Br  Br5  2  0.4143  0.7500  0.5443  1.0
]