data_[Na4Lu2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Lu  1.2700  1.7500  1.0010
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.4120]
_cell_length_b [7.6212]
_cell_length_c [5.0836]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Na2LuO4]
_chemical_formula_sum '[Na4 Lu2 O8]'
_cell_volume [170.9319]
_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  0.5000  0.1957  0.3618  1
  Lu  Lu1  2  0.0000  0.0000  0.8553  1
  O  O2  4  0.0000  0.2459  0.5946  1
  O  O3  2  0.5000  0.0000  0.0142  1
  O  O4  2  0.5000  0.0000  0.7179  1
]