data_[Na4Cr2W2N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cr  1.6600  1.4000  0.9400
  W  2.3600  1.3500  0.7667
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [5.8387]
_cell_length_b [6.4726]
_cell_length_c [6.0707]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [Na2CrWN4]
_chemical_formula_sum '[Na4 Cr2 W2 N8]'
_cell_volume [229.4203]
_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  0.0000  0.2518  0.7319  1.0
  Cr  Cr1  2  0.0000  0.5000  0.1877  1.0
  W  W2  2  0.0000  0.0000  0.1782  1.0
  N  N3  4  0.0000  0.2549  0.3386  1.0
  N  N4  4  0.2432  0.5000  0.0058  1.0
]