data_[K2P2O4F4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.2059]
_cell_length_b [3.4579]
_cell_length_c [7.1548]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.6402]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [KP(OF)2]
_chemical_formula_sum '[K2 P2 O4 F4]'
_cell_volume [145.4832]
_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  0.3955  0.2500  0.7111  1
  P  P1  2  0.1200  0.2500  0.1552  1
  O  O2  2  0.0725  0.7500  0.0904  1
  O  O3  2  0.2924  0.2500  0.3568  1
  F  F4  2  0.1065  0.7500  0.7675  1
  F  F5  2  0.3264  0.2500  0.0440  1
]