data_[Rb12Na4Nb8O12F40]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [21.3822]
_cell_length_b [6.1133]
_cell_length_c [12.3399]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.5985]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [Rb3NaNb2O3F10]
_chemical_formula_sum '[Rb12 Na4 Nb8 O12 F40]'
_cell_volume [1358.9107]
_cell_formula_units_Z [4]
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  0.0426  0.4952  0.8759  1
  Rb  Rb1  4  0.1330  0.0076  0.4068  1
  Rb  Rb2  4  0.2236  0.0050  0.1175  1
  Na  Na3  2  0.0000  0.0119  0.0000  1
  Na  Na4  2  0.0000  0.4989  0.5000  1
  Nb  Nb5  4  0.0892  0.9987  0.7371  1
  Nb  Nb6  4  0.1698  0.5199  0.2506  1
  O  O7  4  0.1210  0.9970  0.6312  1
  O  O8  4  0.1381  0.4975  0.6182  1
  O  O9  4  0.2324  0.7313  0.3458  1
  F  F10  4  0.0121  0.7661  0.6458  1
  F  F11  4  0.0125  0.2327  0.6462  1
  F  F12  4  0.0436  0.9978  0.8592  1
  F  F13  4  0.0869  0.7252  0.1266  1
  F  F14  4  0.0878  0.2732  0.1276  1
  F  F15  4  0.1172  0.5009  0.3425  1
  F  F16  4  0.1558  0.2267  0.8600  1
  F  F17  4  0.1562  0.7729  0.8610  1
  F  F18  4  0.1953  0.5005  0.1186  1
  F  F19  4  0.2320  0.2677  0.3466  1
]