data_[Na3Sr6F3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [4.1377]
_cell_length_b [4.1377]
_cell_length_c [32.6276]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [NaSr2F]
_chemical_formula_sum '[Na3 Sr6 F3]'
_cell_volume [483.7585]
_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
[
  Na  Na0  3  0.0000  0.0000  0.5105  1
  Sr  Sr1  3  0.0000  0.0000  0.7452  1
  Sr  Sr2  3  0.0000  0.0000  0.9621  1
  F  F3  3  0.0000  0.0000  0.2822  1
]