data_[Na4Be4Zn2O8]
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
  Zn  1.6500  1.3500  0.8800
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.1016]
_cell_length_b [2.9168]
_cell_length_c [5.9959]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.5822]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2Be2ZnO4]
_chemical_formula_sum '[Na4 Be4 Zn2 O8]'
_cell_volume [187.5903]
_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
[
  Na  Na0  4  0.1195  0.0000  0.5356  1.0
  Be  Be1  4  0.1752  0.5000  0.9821  1.0
  Zn  Zn2  2  0.0000  0.0000  0.0000  1.0
  O  O3  4  0.0291  0.5000  0.7891  1.0
  O  O4  4  0.2251  0.0000  0.1482  1.0
]