data_[Na4Be4Se8O24]
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
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [11.1210]
_cell_length_b [8.3453]
_cell_length_c [7.6012]
_cell_angle_alpha [90.0000]
_cell_angle_beta [127.7916]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaBe(SeO3)2]
_chemical_formula_sum '[Na4 Be4 Se8 O24]'
_cell_volume [557.4750]
_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
[
  Na  Na0  4  0.0000  0.1880  0.2500  1.0
  Be  Be1  4  0.0000  0.2029  0.7500  1.0
  Se  Se2  8  0.2018  0.4683  0.1103  1.0
  O  O3  8  0.0975  0.2958  0.9896  1.0
  O  O4  8  0.1093  0.0834  0.7284  1.0
  O  O5  8  0.1778  0.4179  0.4033  1.0
]