data_[Sm8Np4Ru8]
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
  Ru  2.2000  1.3000  0.6610
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.0991]
_cell_length_b [5.9669]
_cell_length_c [7.8447]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.1402]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Sm2NpRu2]
_chemical_formula_sum '[Sm8 Np4 Ru8]'
_cell_volume [465.3403]
_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
[
  Sm  Sm0  8  0.1515  0.3737  0.6520  1
  Np  Np1  4  0.0000  0.1302  0.2500  1
  Ru  Ru2  8  0.1252  0.1296  0.0114  1
]