data_[Rb4Np2Br12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Np  1.3600  1.7500  1.0000
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [7.8612]
_cell_length_b [8.6003]
_cell_length_c [13.3284]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.3817]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Rb2NpBr6]
_chemical_formula_sum '[Rb4 Np2 Br12]'
_cell_volume [743.6860]
_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  0.2280  0.5790  0.2528  1
  Np  Np1  2  0.5000  0.0000  0.5000  1
  Br  Br2  4  0.1674  0.6733  0.9600  1
  Br  Br3  4  0.2839  0.2244  0.9597  1
  Br  Br4  4  0.3364  0.5193  0.7540  1
]