data_[Na16Be8O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Be  1.5700  1.0500  0.5900
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [7.8094]
_cell_length_b [5.2726]
_cell_length_c [12.8047]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.3938]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Na2BeO2]
_chemical_formula_sum '[Na16 Be8 O16]'
_cell_volume [463.8155]
_cell_formula_units_Z [8]
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
[
  Na  Na0  4  0.0754  0.5560  0.6246  1
  Na  Na1  4  0.1767  0.0606  0.7651  1
  Na  Na2  4  0.3559  0.1707  0.0335  1
  Na  Na3  4  0.4232  0.6204  0.1682  1
  Be  Be4  4  0.0897  0.5442  0.9615  1
  Be  Be5  4  0.2605  0.6204  0.8771  1
  O  O6  4  0.1262  0.1142  0.3583  1
  O  O7  4  0.1304  0.1348  0.5767  1
  O  O8  4  0.2491  0.7232  0.4788  1
  O  O9  4  0.3625  0.6934  0.8050  1
]