data_[K4Be4O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Be  1.5700  1.0500  0.5900
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [5.0015]
_cell_length_b [5.5882]
_cell_length_c [9.8549]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [KBeO]
_chemical_formula_sum '[K4 Be4 O4]'
_cell_volume [275.4396]
_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
[
  K  K0  2  0.0000  0.0000  0.1173  1
  K  K1  2  0.0000  0.0000  0.5524  1
  Be  Be2  4  0.2036  0.5000  0.3421  1
  O  O3  2  0.0000  0.0000  0.8398  1
  O  O4  2  0.0000  0.5000  0.4604  1
]