data_[Cs2Rb1Nb1Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Rb  0.8200  2.3500  1.6600
  Nb  1.6000  1.4500  0.8200
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [5.9316]
_cell_length_b [10.4920]
_cell_length_c [8.0616]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.1681]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Cs2RbNbCl8]
_chemical_formula_sum '[Cs2 Rb1 Nb1 Cl8]'
_cell_volume [481.8613]
_cell_formula_units_Z [1]
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  2  0.5000  0.2641  0.5000  1
  Rb  Rb1  1  0.0000  0.5000  0.0000  1
  Nb  Nb2  1  0.0000  0.0000  0.0000  1
  Cl  Cl3  4  0.0989  0.1617  0.8224  1
  Cl  Cl4  2  0.3882  0.0000  0.1867  1
  Cl  Cl5  2  0.4424  0.5000  0.7509  1
]