data_[Si2N6F14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  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 [P4/mbm]
_cell_length_a [8.5788]
_cell_length_b [8.5788]
_cell_length_c [4.2797]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [SiN3F7]
_chemical_formula_sum '[Si2 N6 F14]'
_cell_volume [314.9671]
_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
[
  Si  Si0  2  0.0000  0.5000  0.0000  1
  N  N1  4  0.1838  0.3162  0.5000  1
  N  N2  2  0.0000  0.0000  0.0000  1
  F  F3  8  0.1027  0.6027  0.2536  1
  F  F4  4  0.1520  0.3480  0.0000  1
  F  F5  2  0.0000  0.0000  0.5000  1
]