data_[Na4Y4O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Y  1.2200  1.8000  1.0400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4_1/amd]
_cell_length_a [4.6366]
_cell_length_b [4.6366]
_cell_length_c [10.4280]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [141]
_chemical_formula_structural [NaYO2]
_chemical_formula_sum '[Na4 Y4 O8]'
_cell_volume [224.1785]
_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  0.0000  0.5000  1.0
  Y  Y1  4  0.0000  0.0000  0.0000  1.0
  O  O2  8  0.0000  0.0000  0.2209  1.0
]