data_[Sm8Np2N10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Np  1.3600  1.7500  1.0000
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [I4/m]
_cell_length_a [7.9151]
_cell_length_b [7.9151]
_cell_length_c [5.0297]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [87]
_chemical_formula_structural [Sm4NpN5]
_chemical_formula_sum '[Sm8 Np2 N10]'
_cell_volume [315.0998]
_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
[
  Sm  Sm0  8  0.0995  0.2993  0.5000  1
  Np  Np1  2  0.0000  0.0000  0.0000  1
  N  N2  8  0.0918  0.2767  0.0000  1
  N  N3  2  0.0000  0.0000  0.5000  1
]