data_[Np8Fe4C8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Np  1.3600  1.7500  1.0000
  Fe  1.8300  1.4000  0.8525
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.4331]
_cell_length_b [4.9853]
_cell_length_c [5.9665]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.1091]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Np2FeC2]
_chemical_formula_sum '[Np8 Fe4 C8]'
_cell_volume [262.8622]
_cell_formula_units_Z [4]
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  4  0.0534  0.0000  0.8384  1
  Np  Np1  4  0.2018  0.5000  0.6678  1
  Fe  Fe2  4  0.1359  0.5000  0.1304  1
  C  C3  4  0.0025  0.5000  0.7562  1
  C  C4  4  0.1631  0.0000  0.5680  1
]