data_[K2Y2Be4F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Y  1.2200  1.8000  1.0400
  Be  1.5700  1.0500  0.5900
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.4859]
_cell_length_b [5.5506]
_cell_length_c [8.1650]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.4322]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [KYBe2F8]
_chemical_formula_sum '[K2 Y2 Be4 F16]'
_cell_volume [384.2392]
_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
[
  K  K0  2  0.0000  0.0000  0.5000  1.0
  Y  Y1  2  0.0000  0.0000  0.0000  1.0
  Be  Be2  4  0.1287  0.5000  0.7735  1.0
  F  F3  8  0.0236  0.2659  0.8010  1.0
  F  F4  4  0.2032  0.5000  0.6120  1.0
  F  F5  4  0.2478  0.5000  0.9315  1.0
]