data_[Rb1Na2Ni1F8]
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
  Ni  1.9100  1.3500  0.7400
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [4.9162]
_cell_length_b [5.3242]
_cell_length_c [7.2825]
_cell_angle_alpha [87.8721]
_cell_angle_beta [70.8965]
_cell_angle_gamma [78.6155]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [RbNa2NiF8]
_chemical_formula_sum '[Rb1 Na2 Ni1 F8]'
_cell_volume [176.5007]
_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
[
  Rb  Rb0  1  0.5000  0.0000  0.5000  1.0
  Na  Na1  2  0.1665  0.4583  0.1898  1.0
  Ni  Ni2  1  0.0000  0.0000  0.0000  1.0
  F  F3  2  0.0902  0.0218  0.2190  1.0
  F  F4  2  0.1999  0.5235  0.4919  1.0
  F  F5  2  0.2055  0.2435  0.8921  1.0
  F  F6  2  0.3182  0.7474  0.9053  1.0
]