data_[Sr4F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Pm]
_cell_length_a [20.3623]
_cell_length_b [3.8790]
_cell_length_c [20.3623]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [6]
_chemical_formula_structural [SrF2]
_chemical_formula_sum '[Sr4 F8]'
_cell_volume [1392.8507]
_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
[
  Sr  Sr0  1  0.3454  0.0000  0.2594  1
  Sr  Sr1  1  0.4952  0.5000  0.4384  1
  Sr  Sr2  1  0.5109  0.5000  0.6776  1
  Sr  Sr3  1  0.6494  0.0000  0.6244  1
  F  F4  1  0.2736  0.5000  0.2110  1
  F  F5  1  0.4086  0.0000  0.3966  1
  F  F6  1  0.4358  0.5000  0.3012  1
  F  F7  1  0.4420  0.0000  0.6663  1
  F  F8  1  0.5430  0.5000  0.5774  1
  F  F9  1  0.5786  0.0000  0.4849  1
  F  F10  1  0.5988  0.0000  0.7102  1
  F  F11  1  0.7187  0.5000  0.6526  1
]