data_[Np4Fe2Ag2]
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
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.9076]
_cell_length_b [3.5584]
_cell_length_c [4.5796]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.0161]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Np2FeAg]
_chemical_formula_sum '[Np4 Fe2 Ag2]'
_cell_volume [150.7164]
_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  4  0.2212  0.5000  0.6646  1
  Fe  Fe1  2  0.0000  0.0000  0.5000  1
  Ag  Ag2  2  0.0000  0.5000  0.0000  1
]