data_[Na2Np1O3F3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Np  1.3600  1.7500  1.0000
  O  3.4400  0.6000  1.2600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P-62m]
_cell_length_a [6.2052]
_cell_length_b [6.2052]
_cell_length_c [3.2382]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [189]
_chemical_formula_structural [Na2Np(OF)3]
_chemical_formula_sum '[Na2 Np1 O3 F3]'
_cell_volume [107.9822]
_cell_formula_units_Z [1]
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  2  0.3333  0.6667  0.5000  1
  Np  Np1  1  0.0000  0.0000  0.0000  1
  O  O2  3  0.0000  0.2221  0.5000  1
  F  F3  3  0.0000  0.6145  0.0000  1
]