data_[Rb4Np2Cl16]
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
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.1948]
_cell_length_b [9.3580]
_cell_length_c [8.6332]
_cell_angle_alpha [90.0000]
_cell_angle_beta [123.5366]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2NpCl8]
_chemical_formula_sum '[Rb4 Np2 Cl16]'
_cell_volume [955.8841]
_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  0.2209  0.0000  0.6014  1
  Np  Np1  2  0.0000  0.0000  0.0000  1
  Cl  Cl2  8  0.1518  0.1931  0.2102  1
  Cl  Cl3  4  0.0609  0.0000  0.7653  1
  Cl  Cl4  4  0.0844  0.5000  0.5888  1
]