data_[Na4Hf4Cr4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Hf  1.3000  1.5500  0.8500
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [6.2586]
_cell_length_b [6.4571]
_cell_length_c [8.8580]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [NaHfCrO4]
_chemical_formula_sum '[Na4 Hf4 Cr4 O16]'
_cell_volume [357.9759]
_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  0.2500  0.1291  1
  Hf  Hf1  4  0.0000  0.0000  0.5000  1
  Cr  Cr2  4  0.2500  0.2500  0.7500  1
  O  O3  8  0.0000  0.0427  0.7341  1
  O  O4  8  0.2153  0.2500  0.5156  1
]