data_[Na4Y4F14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Y  1.2200  1.8000  1.0400
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [7.5792]
_cell_length_b [8.1870]
_cell_length_c [5.7409]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Na2Y2F7]
_chemical_formula_sum '[Na4 Y4 F14]'
_cell_volume [356.2314]
_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
[
  Na  Na0  4  0.2425  0.5000  0.5000  1.0
  Y  Y1  4  0.0000  0.2694  0.0000  1.0
  F  F2  8  0.2500  0.2500  0.2256  1.0
  F  F3  4  0.0000  0.5000  0.2255  1.0
  F  F4  2  0.0000  0.0000  0.0000  1.0
]