data_[Na6U2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  U  1.3800  1.7500  0.9913
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2/c]
_cell_length_a [7.3502]
_cell_length_b [8.4957]
_cell_length_c [7.2351]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.0106]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [Na3USe4]
_chemical_formula_sum '[Na6 U2 Se8]'
_cell_volume [424.5185]
_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
[
  Na  Na0  2  0.0000  0.3816  0.7500  1
  Na  Na1  2  0.5000  0.1293  0.7500  1
  Na  Na2  2  0.5000  0.3896  0.2500  1
  U  U3  2  0.0000  0.1345  0.2500  1
  Se  Se4  4  0.2184  0.1070  0.0015  1
  Se  Se5  4  0.2394  0.3536  0.4769  1
]