data_[Cs4Na2Np4Se12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Na  0.9300  1.8000  1.1600
  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 [7.2776]
_cell_length_b [12.7467]
_cell_length_c [8.7708]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.4126]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Cs2Na(NpSe3)2]
_chemical_formula_sum '[Cs4 Na2 Np4 Se12]'
_cell_volume [788.0205]
_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
[
  Cs  Cs0  4  0.0000  0.1573  0.0000  1
  Na  Na1  2  0.0000  0.0000  0.5000  1
  Np  Np2  4  0.0000  0.3345  0.5000  1
  Se  Se3  8  0.2349  0.1826  0.6807  1
  Se  Se4  4  0.1886  0.5000  0.6834  1
]