data_[Np2Al2Fe2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Np  1.3600  1.7500  1.0000
  Al  1.6100  1.2500  0.6750
  Fe  1.8300  1.4000  0.8525
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P4_2nm]
_cell_length_a [4.6690]
_cell_length_b [4.6690]
_cell_length_c [9.0822]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [102]
_chemical_formula_structural [NpAlFeO6]
_chemical_formula_sum '[Np2 Al2 Fe2 O12]'
_cell_volume [197.9869]
_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
[
  Np  Np0  2  0.0000  0.0000  0.6675  1
  Al  Al1  2  0.0000  0.0000  0.3313  1
  Fe  Fe2  2  0.0000  0.0000  0.0008  1
  O  O3  4  0.1819  0.8181  0.1701  1
  O  O4  4  0.1969  0.8031  0.4906  1
  O  O5  4  0.2022  0.7978  0.8395  1
]