data_[Sr24Si8N4F4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Si  1.9000  1.1000  0.5400
  N  3.0400  0.6500  0.6300
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Fm-3m]
_cell_length_a [10.2648]
_cell_length_b [10.2648]
_cell_length_c [10.2648]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [225]
_chemical_formula_structural [Sr6Si2NF]
_chemical_formula_sum '[Sr24 Si8 N4 F4]'
_cell_volume [1081.5569]
_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  24  0.0000  0.0000  0.2429  1.0
  Si  Si1  8  0.2500  0.2500  0.2500  1.0
  N  N2  4  0.0000  0.0000  0.0000  1.0
  F  F3  4  0.0000  0.0000  0.5000  1.0
]