data_[Rb4Pu4Np2Se12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Pu  1.2800  1.7500  0.9675
  Np  1.3600  1.7500  1.0000
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.3216]
_cell_length_b [12.6539]
_cell_length_c [8.4916]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.8100]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Pu2NpSe6]
_chemical_formula_sum '[Rb4 Pu4 Np2 Se12]'
_cell_volume [753.0954]
_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
[
  Rb  Rb0  4  0.0000  0.1679  0.0000  1
  Pu  Pu1  4  0.0000  0.3337  0.5000  1
  Np  Np2  2  0.0000  0.0000  0.5000  1
  Se  Se3  8  0.2277  0.1647  0.6891  1
  Se  Se4  4  0.2357  0.5000  0.6891  1
]