data_[Na4Zr2W2N8]
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
  W  2.3600  1.3500  0.7667
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [6.8183]
_cell_length_b [6.6641]
_cell_length_c [5.6361]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [Na2ZrWN4]
_chemical_formula_sum '[Na4 Zr2 W2 N8]'
_cell_volume [256.0963]
_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  0.2494  0.6590  0.9843  1.0
  Zr  Zr1  2  0.0000  0.8527  0.4963  1.0
  W  W2  2  0.0000  0.1599  0.0007  1.0
  N  N3  4  0.2348  0.2989  0.9225  1.0
  N  N4  2  0.0000  0.1266  0.3292  1.0
  N  N5  2  0.0000  0.9039  0.8604  1.0
]