data_[Cs1K1Be2As1]
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
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [5.7557]
_cell_length_b [5.7557]
_cell_length_c [7.1191]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [CsKBe2As]
_chemical_formula_sum '[Cs1 K1 Be2 As1]'
_cell_volume [235.8431]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.5000  1
  K  K1  1  0.0000  0.0000  0.0000  1
  Be  Be2  2  0.0000  0.5000  0.0000  1
  As  As3  1  0.5000  0.5000  0.5000  1
]