data_[Mg2Np4F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Np  1.3600  1.7500  1.0000
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [13.4889]
_cell_length_b [4.2026]
_cell_length_c [7.1788]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.0072]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [MgNp2F8]
_chemical_formula_sum '[Mg2 Np4 F16]'
_cell_volume [406.7068]
_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
[
  Mg  Mg0  2  0.0000  0.7227  0.0000  1
  Np  Np1  4  0.2418  0.4676  0.7490  1
  F  F2  4  0.0766  0.5183  0.8168  1
  F  F3  4  0.0930  0.9623  0.1478  1
  F  F4  4  0.2019  0.9733  0.5674  1
  F  F5  4  0.2301  0.4668  0.0943  1
]