data_[Sr3Bi3F18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Bi  2.0200  1.6000  1.0350
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [7.5338]
_cell_length_b [7.5338]
_cell_length_c [7.6918]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [SrBiF6]
_chemical_formula_sum '[Sr3 Bi3 F18]'
_cell_volume [378.0785]
_cell_formula_units_Z [3]
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
[
  Sr  Sr0  3  0.0000  0.0000  0.0000  1.0
  Bi  Bi1  3  0.0000  0.0000  0.5000  1.0
  F  F2  18  0.0809  0.5404  0.3509  1.0
]