data_[Na4Zr8O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Zr  1.3300  1.5500  0.8600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [10.0082]
_cell_length_b [3.1510]
_cell_length_c [11.5949]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [NaZr2O4]
_chemical_formula_sum '[Na4 Zr8 O16]'
_cell_volume [365.6514]
_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  0.2470  0.7500  0.3563  1
  Zr  Zr1  4  0.0697  0.7500  0.1112  1
  Zr  Zr2  4  0.0810  0.7500  0.6069  1
  O  O3  4  0.0187  0.2500  0.7224  1
  O  O4  4  0.0835  0.7500  0.9307  1
  O  O5  4  0.1130  0.2500  0.4759  1
  O  O6  4  0.2163  0.2500  0.1579  1
]