data_[Rb4Ni6F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ni  1.9100  1.3500  0.7400
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.0918]
_cell_length_b [6.3088]
_cell_length_c [5.4179]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.4070]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Ni3F8]
_chemical_formula_sum '[Rb4 Ni6 F16]'
_cell_volume [424.5852]
_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  0.2253  0.5000  0.6765  1
  Ni  Ni1  4  0.0000  0.2560  0.0000  1
  Ni  Ni2  2  0.0000  0.0000  0.5000  1
  F  F3  8  0.0853  0.2189  0.3786  1
  F  F4  4  0.0857  0.0000  0.8986  1
  F  F5  4  0.0954  0.5000  0.9702  1
]