data_[Np4Sn4Sb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Np  1.3600  1.7500  1.0000
  Sn  1.9600  1.4500  0.8300
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [P6_3/mmc]
_cell_length_a [5.0928]
_cell_length_b [5.0928]
_cell_length_c [12.2486]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [194]
_chemical_formula_structural [Np2Sn2Sb]
_chemical_formula_sum '[Np4 Sn4 Sb2]'
_cell_volume [275.1262]
_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  0.3333  0.6667  0.6073  1
  Sn  Sn1  2  0.0000  0.0000  0.0000  1
  Sn  Sn2  2  0.3333  0.6667  0.2500  1
  Sb  Sb3  2  0.0000  0.0000  0.2500  1
]